OAKLAND, Calif. — Jake Odorizzi was lamenting the five pitches he threw in the seventh inning, none of which even drew a swing, as the reason the Rays lost 8-2 Sunday, letting another game they should have won get away."It's my fault," Odorizzi said. "The loss is on me."But, really, he was being kind to his teammates. After the leadoff walk, all Odorizzi, standing with Chris Archer and pitching coach Jim Hickey near the end of the dugout, could do was watch in frustration as the Rays gave away a 2-1 advantage, done in again by their suddenly suspect bullpen.For the fourth time on the 10-game road trip, Rays relievers blew a lead in the seventh inning or later. What could have been an 8-2 journey ended a disheartening 4-6, the postgame silence and head shaking in the clubhouse saying plenty.Whether it's the cumulative effect of heavy high-leverage use, the residual impact of the absences of injured Jake McGee and traded Kevin Jepsen and/or the combination of several pitchers, starting with de facto closer Brad Boxberger, struggling at the same time, what had been a significant strength of the team has become a serious concern.Manager Kevin Cash insists it is an isolated, albeit poorly timed, stretch and won't be an ongoing issue as the Rays, back again to .500 at 62-62, try to stay in the American League wild-card race."You factor in different hot spots during the season, cold spots. I'm not saying the pen is cold. We've given up some leads, but unfortunately when you do, the pen is going to be the focal point of all this," Cash said. "We have a lot of confidence in the guys who are coming from the bullpen."Cash put all of it onto Steve Geltz on Sunday, which proved to be a bad call.After being rewarded for his standard solid six innings with a two-run rally in the top of the seventh, with catcher Rene Rivera knocking in the go-ahead run, Odorizzi walked to the mound and issued his first walk of the day. The free pass to Danny Valencia nudged Odorizzi's pitch count to 94 and Cash to the mound.Cash had a number of options, including lefty Xavier Cedeno, to face ex-Rays Stephen Vogt, a lefty swinger, but chose Geltz, based, as usual, on the matchups.Geltz faced five batters who, in a blur of 13 pitches, went double, single, double, single, walk, quickly turning that 2-1 lead into a 4-2 deficit. Kevin Kiermaier threw out Vogt at the plate, keeping it from being worse."It was just one of those games," Geltz said. "Everything I threw was getting hit. I wasn't making good enough pitches."Cash was so certain Geltz was the right choice that the Rays — with a relatively full pen and today off — didn't have anyone else warming. And when the A's struck so quickly, it took a few minutes for rookie Matt Andriese, a converted starter, to get ready."Geltzy came in with a man on first, no outs, that's probably a situation he normally can kind of cruise through," Cash said. "He did not, and I don't think we read into it any more than that."Andriese was somewhat of a curious choice, coming in with two on and one out, and that backfired, too. He allowed an infield single — by getting beat to first by Billy Burns — to load the bases then left a fastball up to Mark Canha, whose three-run triple made it 7-2. The A's added one more run by the time the 12-batter, 31-minute, 42-pitch half-inning was over.From the end of the dugout, Odorizzi could only watch it all slip away."It was just as agonizing as it was for everybody else to sit there and watch hit after hit," Odorizzi said. "It's just one of those things that happens."But for the Rays, it's starting to happen way too often. And if something doesn't change soon, it may be late to do anything about it. Contact Marc Topkin at email@example.com. Follow @TBTimes_Rays.