BOSTON -- In Aaron Cooks first five starts this season, spanning 29 23 innings, he gave up just two home runs, one in his first start and one in his fourth start.Since then, though, he has given up six home runs, two in each of his last three starts, spanning just 15 innings. Wednesday night against the Tigers, Cook gave up back-to-back home runs in the fifth inning on consecutive pitches, a mammoth two-run shot to Miguel Cabrera over the left field wall and a solo home run to Prince Fielder to straightaway center.Cook took the loss as the Sox fell to the Tigers, 7-5, at Fenway Park.Ive been missing location with my pitches, he said. Unfortunately, I think Im on one of those streaks that Ive never had in my career where Ive given up multiple home runs in three games in a row now. So just those situations I might need to bear down a little harder and make sure that Im definitely down in the zone because if Im still down in the zone, theyre hitting balls on the ground. I think the outcome of the games totally different.Cook seemed to be handling the Tigers with relative ease early in the game. Through the first three innings, he gave up just two hitsa first-inning Miguel Cabrera single, and a third-inning Ramon Santiago single.But Cook began to struggle in the fourth. He hit Quintin Berry with a pitch to open the inning. With Cabrera at bat, Cook picked Berry off first and then got Cabrera to fly out to Ryan Kalish in right field. But Prince Fielder doubled off the wall in left, scoring on Brennan Boeschs single to center.Cook unraveled in the fifth. He gave up consecutive singles to Alex Aviles and Jhonny Peralta to open the inning. Each moved up on Santiagos sacrifice bunt. Avila scored on Austin Jacksons single to left with Peralta scoring on Berrys groundout. Jackson moved up to third when Cook unleashed a wild pitch, but that quickly became moot when Cook hung a curveball to Cabrera who launched a titanic shot over the Green Monster, scoring Jackson, for his 26th home run of the season. On Cooks next pitch Fielder homered into the first row of seats in the center field bleachers.That ended Cooks outing.Well, Cookie got some ground balls and they got some men on base and then two outs, two strikes he thought he could bounce a curveball and he didnt bounce it, manager Bobby Valentine said. And the big boy deposited it. Just looking for that groundball at someone, just didnt happen that inning.Cabrera is 5-for-10 (.500) with five RBI, a double, and a home run in his career against Cook, including going 2-for-3 in this game.The biggest problem was hanging a breaking ball to one of the best hitters in the game, Cook said. He had a long at-bat and I tried to do something a little different. Hung a curveball and thats what hes supposed to do with that type of pitch. Other than that, I can live with the groundballs getting through and scoring runs here and there. But when Im making bad pitches to the best hitters in the game and just leaving them up, they did exactly what theyre supposed to do with those pitches.He left a curve ball up with two strikes to Cabrera and then the first pitch (to Fielder) was a curveball, said catcher Jarrod Saltalamacchia. We didnt expect the guy to swing first-pitch curve ball after a home run.Cook went 4 23 innings, giving up six runs on nine hits with two home runs, a wild pitch, and a hit batter. He took the loss, dropping his record to 2-5 while his ERA rose from 4.50 to 5.24.For the third time this season, Cook did not record a walk or a strikeout. Although Cook is a groundball pitcher and pitches to contact, not recording a strikeout isnt necessarily a good thing.Five of the nine hits he allowedincluding the home runscame with two outs. Six of the nine hitsthe first four hits he gave up, Jacksons single in the fifth, and Cabreras home run -- came with two strikes on the batter. Not having a put-away pitch can be a detriment.We all wish that he had a pitch that with two strikes would be a swing-and-miss pitch, especially some of those guys he had two strikes and they just kept fouling them off, Valentine said. So, yeah, thats what you live with with a contact pitcher. He works quick and doesnt walk people. A lot of times those groundballs find holes.In his last three starts, Cook is 0-3 with a 9.00 ERA. Valentine was not ready to make any declarations on Cooks future in the rotation.Were dealing with the Josh Beckett situation right now with the rotation, Valentine said, of Becketts ailing back.But he is concerned. In Cooks last three starts, his longest outing was six innings against the Blue Jays on June 21. He hasnt been able to get through five innings in his last two starts. He gave up six earned runs in each of his last two games.The home runs are a concern. Length of game, Valentine said. That was a real tight rope walk with the bullpen there. Guys did a good job.For his part, Cook said he has not lost confidence.No, confidence-wise that doesnt really shake me, he said. I know what Im doing out there. I know what happened and why it happened. I still feel strong and still feel healthy. Its just a matter of in those certain situations not making those bad pitches and just bearing down because like I said I feel like Ive only been making three or four bad pitches a game but theyve been resulting in four, five runs on the other side. So, I just really got to make sure to bear down and pitch a little bit smarter.