Oswaldo Arcia came in and said he's OK to play tonight, manager Ron Gardenhire said, but the team's athletic trainers said he still feels some discomfort in his lower back when he swings. Rather than aggravate the injury, the Twins have decided to keep him on the bench for a couple of days, especially since Thursday is an off day.

That creates an opening for Gardenhire to play the fastest outfield lineup that the Twins have used since ... when? I'll have to look that up, but this is just the second time this season that Jordan Schafer (LF), Danny Santana (CF) and Aaron Hicks (RF) have patrolled the outfield together, giving the Twins more coverage than they're used to out there.

Of course, it also subtracts Arcia's bat from the lineup, at a time when the 23-year-old Venezuelan has been crushing the ball. He's hit four home runs in his last nine games, and is just two behind Brian Dozier for the team lead with 12 games to play.

One other injury note: Twins coach Joe Vavra underwent hip-replacement surgery today, and all reportedly went well. There's a chance he might be able to rejoin the Twins for the season's final week.

The Tigers start Rick Porcello tonight, a righthander who will be making his 22nd career start against the Twins. He's 8-6 with a 3.84 ERA against Minnesota.

UPDATE: Detroit has scratched Nick Castellanos, moved Don Kelly from CF to 3B, and inserted Rajai Davis in the outfield. Corrected lineup is below.

Here are the lineups for tonight's game, a critical one for the Tigers:

TIGERS

Kinsler 2B

Hunter RF

Cabrera 1B

V. Martinez DH

J.D. Martinez LF

Kelly 3B

Holaday C

Romine SS

Davis CF

Porcello RHP

TWINS

Santana CF

Dozier 2B

Mauer 1B

Vargas DH

Plouffe 3B

Suzuki C

Escobar SS

Hicks RF

Schafer LF

Nolasco RHP