PRETORIA, South Africa -- Oscar Pistorius has an anxiety disorder that may have contributed to the fatal shooting of his girlfriend, an expert testified at his murder trial Monday, prompting the chief prosecutor to say the double-amputee Olympian should be placed under psychiatric observation. The judge has not yet ruled on prosecutor Gerrie Nels application that the court considers a period of mental evaluation for the world-famous runner. Dr. Merryll Vorster, a psychiatrist called by the defence, testified that a series of events in Pistorius turbulent life, including the amputation of his lower legs as a baby, his parents divorce, his late mothers habit of sleeping with a gun under her pillow and his own fear of violent crime contributed to his "increasing stress." "Overall, Mr. Pistorius appears to be a mistrustful and guarded person," Vorster testified. She said he has "many features of anxiety." Vorster said Pistorius anxiety combined with his physical disability may have caused him to act differently from other people when he shot four times through a toilet stall door in the early hours of Feb. 14, 2013, killing girlfriend Reeva Steenkamp. Pistorius, 27, claims he mistook Steenkamp for a dangerous intruder when he shot her with his licensed 9 mm pistol in the pre-dawn hours. Prosecutors say he killed the 29-year-old model after an argument and shot in anger and not fear last Valentines Day. Pistorius chief lawyer Barry Roux said at the start of defence-led testimony that the double amputees vulnerability and disability was at the centre of his case of a mistaken killing. But prosecutor Nel questioned Monday if Pistorius was merely trying one of a number of defences for shooting his girlfriend. "There must be some reason why Mr. Roux decided to call this witness. It might be the third defence that we have," Nel said. Pistorius, the first amputee to run at the Olympics, testified at his trial that he fired his gun accidentally at the toilet door. That appeared to contradict his initial statement in court documents last year that he shot in self-defence because he believed his life was in danger. Nel said if Pistorius had genuine anxiety issues, Judge Thokozile Masipa should order him to be evaluated. Responding to a question from a reporter after the trial was adjourned, Pistorius said "Go read the law." As the athlete sat in the Pretoria courtroom earlier Monday making notes and occasionally looking up at the witness stand, Vorster outlined his apparently unhappy childhood and a life story in contrast to the smiling, triumphant disabled runner who made history at the London Olympics in 2012. Vorsters testimony raised the question of whether Pistorius was now claiming "diminished responsibility" for the shooting, Nel said, because of a possible mental illness. Nel also asked the psychiatrist if someone who was suffering from such an anxiety disorder, and had access to guns, would be a danger to society. Vorster said the person would, indeed, be a danger. Vorsters testimony came at the start of the eighth week of the globally televised trial, and a day before Pistorius defence had predicted it might wrap up its case. It now appears unlikely that the defence will rest Tuesday. The prosecutions cross-examination of the psychiatrist could continue on day 31 of proceedings after Nel asked for more time to look at her report on Pistorius. Vorster reached her opinion after meeting with Pistorius on two occasions this month, and also from interviews with his family, friends and agent, she said. Pistorius and his brother and sister "were reared to see their external environment as threatening," Vorster said, and this played a part in his actions on the night of the shooting. Vorster said Pistorius was more likely to try and "fight" what he thought was an intruder than run away, because his disability meant it was harder for him to flee. Pistorius was on his stumps when he shot Steenkamp. Scott Schebler Jersey . Jeter doubled high off the left-field wall and scored on Jacoby Ellsburys first hit in pinstripes in the fifth. Hiroki Kuroda (1-1) pitched 6 1-3 sharp innings in the Yankees 112th opener in New York. In what manager Joe Girardi said would be a season-long lovefest for Jeter, the shortstop was cheered every step of the way by an adoring crowd of 48, 142 -- even when his double-play grounder back to Orioles starter Ubaldo Jimenez (0-2) scored Solarte in the third inning for the first run. 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Kerry, In Mondays Habs/Bruins game, there were three questionable/brutal calls against the Habs late in the game - Tomas Plekanec, then Douglas Murray, then Brendan Gallagher.SAN DIEGO -- The best score belonged to Stewart Cink. The best round belonged to Pat Perez. Tiger Woods didnt come close to claiming either Thursday in the Farmers Insurance Open, where the seven-time champion failed to break par in the opening round for first timcink ran off three straight birdies late in his round on the easier North Course at Torrey Pines for an 8-under 64. That gave him a one-shot lead over Gary Woodland, who also was on the North, which is more than 600 yards shorter. Perez was on the South Course, host of the 2008 U.S. Open and with greens so firm this year that it felt like a major. Perez had a 67, the best score on the South by two shots, and even more astounding is that he played bogey-free. The South played nearly four shots harder than the North. Woods, making his 2014 debut, failed to birdie any of the par 5s and had to settle for a 72. "Even par is not too bad, but I didnt play the par 5s worth a darn today," Woods said. "Obviously, thats (tantamount) to try to get any kind of scoring on the South Course. Youve got to take care of the par 5s because theres not a lot of holes you can make birdie here. Subsequently, I didnt finish under par." Even at eight shots behind, he wasnt worried about a chance to win at Torrey for the ninth time -- including a U.S. Open. The courses are so different than its difficult to gauge where anyone stands until everyone has had a crack at both courses. The weekend rounds are on the South. "Im going to have to go out there and get it a little bit tomorrow to not be so far behind come Saturday or Sunday," Woods said. Cink did what he was supposed to do. The rough is up on the North, too, so it was important to get the ball in play. He did that, allowing him to take on some pins. "You want to really take advantage of the North Course because it will yield to you a little bit, and the South Course will not," Cink said. "I did a great job of going out there, just playing shot-by-shot, not really getting too caught up in, I have to birdie these holes. As a consequence, I actually made a few birdies and it felt great." Phil Mickelson, meanwhile, felt awful. He was coping with a back locked up on him, unusual for Mickelson because he doesnt have a history of back pain. It got so bad at one point that Mickelson thought about withdrawing from his hometown event, especially after his 4-iron on the par-5 18th at the North Course nearly went out-of-bounds. Mickelson used his short game to make birdie, and then made another birdie on the next hole and he scratched out a 69. "Never thought aboout not starting, but around the turn I thought about maybe taking this week off and seeing if I could get a little bit better," he said.dddddddddddd "I kind of fought through the back nine and gave myself a chance." He described it as a muscular problem and was hopeful treatment would help. Mickelson swung easy on the North. Players have to swing for the fences on the 7,698-yard South Course, where the average score Thursday 74.45. Not many would have predicted a 67 on the South, though Woods wasnt surprised when he heard who did it. "Why? He grew up here," Woods said. "This was his home course. Hes playing it more times than any tour pro certainly." Perez has such a history at Torrey that his father, Tony, continues to announce the players on the first tee at the South Course. And heres even better history -- Perez won a Junior World Championship at Torrey Pines, by beating some Orange County kid named Tiger Woods. "Best day of my life," Perez said. "Ive known him forever. Hes always been great to me. He gives me advice here and there, but to beat him that year was fantastic. ... Ive got to hold onto that, so thats about all that I got over him. But it hurts him. Ill you tell, it hurts him." Perez was joking. He is full of bluster and always fun, a favourite among the players. Thats what made Thursday so enjoyable. The weather was close to perfect, with hang gliders filling the sky left of the fourth fairway on the South. Perez had no bogeys on his card, and he cant remember if that ever happened since the South was stretched out to prepare for the U.S. Open. It was only one round, but it was a great for Perez -- and for Cink, who hasnt won since his British Open title at Turnberry in 2009. The test for Cink is Friday on the South, especially considering that only three players broke 70 on the South -- Perez, Charley Hoffman (another San Diego native) and rookie Kevin Tway, whose father (former PGA champion Bob Tway) won this event in 1986. Ottawas Brad Fritsch opened with a 3-under 69. Graham DeLaet of Weyburn, Sask., carded a 70. David Hearn of Brantford, Ont., shot an even par 72. Riley Wheeldon of Comox, B.C, who qualified on Monday, signed for a 4-over 76. Mike Weir of Brights Grove, Ont., was another shot back. DIVOTS: Jordan Spieth, who missed the cut at Torrey Pines last year as a 19-year-old making his pro debut, played with Woods and Jimmy Walker and shot 71. ... Fifty of the 62 rounds under par were on the North Course. ... The worst score on the North Course was a 77 by Brandt Snedeker and Derek Ernst. 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