With a 17 game lead in the AL West, the Astros are almost certainly going to the postseason. But as they figure out what to do before tomorrow’s trade deadline, and weigh the costs of potential upgrades, it is becoming pretty clear that they should have some concerns about Lance McCullers.

Their #2 starter was lights out to begin the year, but on June 12th, the Astros put him on the DL with a back problem. It sounded like the kind of semi-fictional injury that teams have used to give starters a break with the new 10-day disabled list, and not something that the team should be all that worried about, despite McCullers’ long history of arm problems. But after another lousy outing today, it’s worth noting that McCullers has looked nothing like his early-season self since returning from the DL.

Lance McCullers, Before and After DL Dates IP H BB HBP K ERA- FIP- xFIP- Through June 12th 77 58 23 5 89 61 67 62 Since June 24th 29 42 13 5 29 175 69 90

Because he hasn’t surrendered a home run in any of his six starts since returning from the DL, his FIP still looks fine, but everything else is a mess. His 9% walk rate doesn’t look awful, but once you add in the five HBPs, he’s putting 13% of the batters he faced on base without forcing them to swing the bat. More worryingly, his strikeout rate over that stretch is just 20%, below the league average, and that includes him racking up 14 strikeouts in his first two starts off the DL; he has struck out just 17 of 100 batters in his last four starts.

Coming into today, batters were hitting .387/.472/.492 off McCullers in July.

Today, the Tigers hit .363/.500/.409 against him.

Some of his recent struggles are just BABIP related, but McCullers’ command has basically disappeared over the last month, and when he’s behind in the count, he can’t get guys to chase his curveball out of the zone. Obviously, he could find his command again before October, and you don’t want to overreact to a few bad starts in a row, especially with a playoff spot all but guaranteed. But given McCullers’ long list of health issues and his struggles since returning from the disabled list, the Astros should probably be a bit more motivated to add a starter before tomorrow’s deadline.