PRETORIA, South Africa -- A South African police officer swung a cricket bat at Oscar Pistorius bullet-marked bathroom door during his murder trial on Wednesday, using two key pieces of evidence to re-enact the night he killed his girlfriend. Police Col. J.G. Vermeulen faced tough questioning from Pistorius defence lawyer, who tried to discredit the police investigation of the shooting and alleged that Vermeulen, a forensic expert, made glaring missteps in his analysis. Pistorius lawyers secured bail for him last year after contending that police contaminated or tampered with evidence from the home where he fatally shot Reeva Steenkamp, firing through the bathroom door as she cowered inside during the pre-dawn hours of Valentines Day 2013. Pistorius says the killing was a mistake; the prosecution alleges the 27-year-old double-amputee intentionally shot Steenkamp after an argument. The actual door that Pistorius shot through a year ago was erected in the Pretoria courtroom Wednesday, and the bat he used that night was used in the demonstrations. There was even a toilet cubicle behind the door, recreated to the exact specifications of the small area of Pistorius bathroom where the 29-year-old model was fatally shot, Vermeulen said. Below the doors handle, four bullet holes were clearly visible. Steenkamp was hit three times in the hip, arm and head. One shot missed, the court has heard. Pistorius says he used the bat to break down the door after realizing he shot Steenkamp, mistaking her for an intruder. Kneeling, Vermeulen swung the bat to show how he believed Pistorius struck the door from a low angle, indicating he was on his stumps at the time. Defence lawyer Barry Roux insisted Pistorius was wearing his prosthetic legs, saying the bat marks on the door were low because he swung with a bent back. The back-and-forth over whether Pistorius, the first amputee to run at the Olympics, was on his prosthetic limbs or not is important because it could match parts of his story that he accidentally shot Steenkamp, or expose inconsistencies in it. Last year, prosecutors maintained Pistorius was on his prostheses when he fired through the door, arguing the runner planned the killing while putting on his artificial limbs. But in a reversal, prosecutor Gerrie Nel said in court Wednesday that he did not dispute the defences contention that the runner was on his stumps when he opened fire. The athlete has said he fearfully approached the bathroom on his stumps and shot Steenkamp by mistake, thinking she was an intruder hiding behind the door. According to his account, he then put on his prostheses and tried to kick down the locked door, striking it with a cricket bat in a panicked attempt to reach his girlfriend. Roux turned up the pressure on Vermeulen, saying the police investigator failed to properly look at another mark on the door the defence says was made by Pistorius prosthetic leg as he tried to kick it down, leaving a piece of sock fabric lodged in the wood. The defence lawyer also indicated that police investigators might have left a shoe print on the door, the door itself might have been kept in a policemans office and not in proper evidence storage, and missing fragments from the door werent examined. Vermeulen said the door was kept in a "body bag." In an evidence photo, a faint footmark on one of the door panels could be seen. "It looks like a police shoe print," Vermeulen said. "How did that come about?" Roux asked. Vermeulen said he did not know. Earlier, Vermeulen also said a metal panel on the wall of the main bathroom in Pistorius home had been damaged by being hit with a "hard" object. The panel was new evidence. A photo of the damaged plate was shown. Pistorius faces a possible life sentence if convicted of murder for killing Steenkamp. The judge, who watched the demonstrations Wednesday, will ultimately decide on the verdict. There is no trial by jury in South Africa. Pistorius was born without fibula bones because of a congenital defect, and his legs were amputated when he was 11 months old. He ran on carbon-fiber blades and is a multiple Paralympic medallist . He also competed at the London Olympics but didnt win a medal. Carlos Ruiz Jersey .Cameron sustained his third concussion in three seasons last week on a hit by Oakland safety Brandion Ross, who was fined $22,050 by the NFL for the helmet-to-helmet blow. James Paxton Jersey . The 24-year-old Raley was 0-2 with a 9.00 ERA for Chicago in his first two career starts after being called up from Iowa on Aug. 7. He was optioned to Iowa on Monday after losing 3-0 to Cincinnati in Chicago on Sunday. http://www.marinersrookiestore.com/.Brooks, a three-year veteran, was slow to get up after suffering the injury during a 5-yard run by Arian Foster.Brooks limped off the field midway through the quarter and then slowly walked to the locker room a few minutes later. Kyle Seager Jersey . -- Adrian Peterson remained in a walking boot to treat a high ankle sprain on his left leg on Wednesday, and coach Leslie Frazier said he will not play on Sunday against Atlanta if he cant hit the practice field in the next two days. Ken Griffey Jersey . Manager Alex Ferguson says the injury was sustained while the player tried to hit a volley toward the end of training on Tuesday.On Tuesday, the Ottawa Redblacks introduced Henry Burris as their newest quarterback, joining Thomas DeMarco and Kevin Glenn, who were picked up in the expansion draft. Last week, the Blue Bombers made a substantial multi-year offer to Burris to take over the starters role. In a telling move, the veteran pivot turned down the offer, choosing instead to join the expansion Redblacks, assuming he thinks they offer a better chance at immediate success. Do you agree? Are the Redblacks a better option than the Blue Bombers right now? Last season, the Blue Bombers struggled to a 3-15 season and replaced head coach Tim Burke with Mike OShea, the likeable special teams coordinator from the Toronto Argonauts. Marcel Bellefeuille is back as the offensive coordinator, a position he took over last August. Changes are happening in the Manitoba capital in hopes of turning things around in short order. And in a league the size of the CFL, teams have gone from worst to competitive on many occasions so the Blue Bombers could very well make the playoffs as early as next season. Expansion teams rarely compete for a playoff spot In Ottawa, winning is not expected to come quickly. With a roster made up of players who were left exposed by existing teams in the expansion draft, itt will take some time to build a successful organization.dddddddddddd Thats what makes this move surprising. At 38 years of age, Burris window to win is small and yet, he decided the Redblacks offered a better opportunity than the Blue Bombers. Secondly, by making the offer to Burris after his release from the Hamilton Tiger-Cats, the Blue Bombers made it clear who their starting quarterback would be in Week 1. There would be competition in training camp but the job would be his to lose. The situation is not so clear cut in the nations capital. Burris will have fellow veteran Glenn, who likely thought he had the inside track on the starters role before Tuesdays move, and De Marco, likely the quarterback of the future, to contend with. While the early nod may go to Burris, the other two candidates bring their own talents to the table and will be gunning for that top job. Many factors go into making the kind of decision Burris made on Tuesday and winning is usually at or near the top of the list for professional athletes. Taking everything into consideration, Burris decided Ottawa was a better fit than Winnipeg. Do you agree? Which team do you think offers the best opportunity to win now: Redblacks or Blue Bombers? As always, its Your! Call. 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