ARLINGTON, Texas — The first game of the Rays' critical 10-day road trip got off to a bad start, with Nathan Karns putting on a shaky show Friday night in front of his hometown crowd.And it ended worse, as the Rays put a one-run lead in the hands of their rested bullpen in the seventh inning, and ended up with stinging 5-3 loss."It hurts,'' centerfielder Kevin Kiermaier said. "We had this one.''Steve Geltz, who has inherited most of traded Kevin Jepsen's duty, failed them first, allowing a two-out, tying homer in the seventh to rookie Delino DeShields.Then Jake McGee allowed one-out singles to Adrian Beltre and Mitch Moreland, a sac fly to former Devil Rays top prospect Josh Hamilton and an RBI single to Elvis Andrus.The Rays, who fell to 58-57 as their four-game winning streak ended, caused some of their own problems as well. They left seven men on while hitting into three double plays and had runners thrown out at second and third. And Kevin Kiermaier, after making a spectacular leaping catch, threw to the wrong base in the eighth."Tough loss,'' manager Kevin Cash said. "Tight ballgame. We weren't able to maybe make the big pitches when we needed to, left some guys on base. Like the way we swung the bat, couldn't quite clump anything together.''Having grown up in Arlington, Karns was excited to make his first "home" start, with 30 relatives and around 100 friends, former teammates and coaches expected in the stands.Unfortunately for Karns, it showed, as he got off to a rough start and didn't get through the fifth inning, having allowed two runs but five walks and a hit batter along with two hits.Karns hit the first batter then, after a stolen base, walked the next two to load the bases, though escaped allowing only one run. In the second he allowed a 437-foot homer to Hamilton on a misplaced changeup.Karns said his struggles were "not at all" nerves or related to pitching in front of family and friends, but "rust," though he had only one extra day since his last start. He also said he was "disappointed" to not get to work deeper into the game.With Desmond Jennings making a three-hit return from the disabled list, the Rays scored three early runs but had chances for more.They got one in the second when Asdrubal Cabrera, continuing his torrid hitting, doubled, went to third on an errant pickoff and scored on a single by Jennings.They got two more in the third on a big hit by Evan Longoria after a key replay challenge. The rally started when Kiermaier beat out an infield single and Curt Casali was hit by a pitch. Brandon Guyer grounded into what was initially a double-play grounder, but at the suggestion of video coordinator Chris Fernandez, Cash challenged the call and it was overturned on replay review, the first of three on the night.That was important because with two outs, Longoria — with his eighth hit in his past 11 at-bats with runners in scoring position — lashed a drive to left-center that scored two.Kiermaier made the biggest defensive play, leaping at the centerfield wall to rob Prince Fielder of a tying homer in the fifth. But he also was upset about his "bonehead play" in the eighth, when he threw to third rather than second, allowing Moreland to get into scoring position, which cost them when Andrus tacked on the extra run with the third hit of the eighth off McGee.Meanwhile, the Rays were wasting chances to score.In the seventh, Curt Casali led off with a double but after Grady Sizemore grounded hard to first Casali was – eventually, after an out call on the field that was changed to safe, then a replay review that went back to out – caught trying to get to third. (Cash, for what it's worth, said the umps got it right.)In the eighth, they got two-out singles by Cabrera and Jennings but Tim Beckham – left in to face right-hander Sam Dyson, with James Loney on the bench – took a called third strike. Cash said the decision was a combination of liking Beckham's previous at-bats, and preferring that matchup to Loney facing lefty Jake Diekman.After Xavier Cedeno got the Rays through the sixth, they turned to Geltz for the seventh, the inning previously handled by Jepsen, who was traded July 31 to the Twins. Geltz got two outs but made a big mistake after throwing a strike then three straight balls to DeShields, leaving a fastball over the middle of the plate — "center cut,'' as Cash called it — that DeShields launched for his first big-league home run."With his speed, I definitely didn't want to put him on base in a one-run game,'' Geltz said. "Just didn't make a good pitch, and he hit it out.''Geltz said he doesn't feel any more pressure pitching in the seventh inning."I just try to do the same thing I've been doing all year,'' he said. "I don't really know what role I, per se, have and to be honest I don't care. I just want to be out there and pitch in whatever situation they put me in. ... Every time I'm out there I want to feel like it's the ninth inning with a one-run lead, and that's the way I like to compete.''Cash said he understood Geltz's approach in wanting to force contact with DeShields — who hadn't homered in his first 258 big-league at-bats — ahead of the sluggers in the Texas lineup and still has "a ton of confidence" in the rookie who leads the American League with 56 appearances."He's been outstanding all year,'' Cash said. "He's going to give up some home runs some time like we saw tonight. But for the most part he's been extremely consistent and pitched a lot of big innings for us and will continue to do so."