The 24-year-old began the season going 4-2 with a 3.18 ERA through July. However, over the past month, his season ERA has jumped by more than a full run and he has four more losses to go with only one win.
For McAllister -- now 5-6 with a 4.26 ERA -- it all culminated in a loss to the Rangers on Sunday. He allowed a career-high 11 hits and a career-high four home runs on his way to giving up seven runs in an 8-3 loss.
Despite being 1-4 with a 6.08 ERA in his last seven games, manager Manny Acta backed his starter and said going through a rough stretch like this is normal for any pitcher or hitter.
"First of all, he's human," Acta said. "We're not on top of our game physically and mentally on an everyday basis, and he didn't have his best stuff in his last outing, especially ... I think everybody has to go through it, and he went through it last year when he came up and learned from it. The best in the business go through it, guys. We're all human."
Acta was asked if the focus has been an issue for the right-hander, and the skipper quickly disposed of that theory.
"I don't think that's the case with him," he said, "He's a very focused kid that really, really takes everything about his job serious when it comes down to preparation. Be it video, physical strength and conditioning, everything. He's just going through a rough spell."