Johnson was back to his old dominant self his last time out, and he'll face D-backs lefty Wade Miley in the third game of a four-game set at Marlins Park.
The Marlins were swept by the Nationals in two games and the Mets in three before they dropped the first game at home to Arizona. They appeared headed for another loss Saturday, but the offense finally broke out of a funk after 15 scoreless innings to start the series.
If Johnson pitches like he has in the past against Arizona, the Miami offense won't need to do much Sunday. In four starts vs. the D-backs, Johnson has allowed three runs in 27 innings.
Many of the questions surrounding Johnson's rough start to the 2012 campaign were put to bed when he went 6 2/3 innings, allowing just one run on three hits against the Mets. Johnson said his improvement was the result of a change in arm angle.
"Once you start getting to that slot, it changes your whole delivery," Johnson said. "You feel comfortable. You feel you can do a lot more things with the ball. Once you get to that angle, I don't know if velocity-wise I was throwing a lot harder that last game. But the ball was coming out a lot better. The swings were a lot different."
For the D-backs, Miley has done everything asked of him despite the uncertainty that has surrounded his role since Spring Training.
He was a fringe player as to whether he'd make the club, and he only really had his role solidified when Takashi Saito was placed on the disabled list. Then, Miley only moved into the starting rotation because of an injury to Daniel Hudson. He has produced throughout, however, including six shutout innings in his first start.
D-backs: Call goes to Corbin
Patrick Corbin will start the series finale on Monday in place of righty Josh Collmenter, who is headed to the bullpen. Collmenter has struggled mightily in his four starts, going 0-2 with a 9.82 ERA.
"It's a tough decision," general manager Kevin Towers said. "We've got several guys down there throwing well. He performed very well in Spring Training, he's been in pro ball maybe a little bit longer than some of the others. We've looked at the National League, and most clubs have been struggling against left-handed pitching."
The team will make its corresponding roster move when Corbin joins the team.
Marlins: Infante out
Marlins second baseman Omar Infante was out Saturday with a sore groin, and he is expected to miss Sunday's game, as well. Manager Ozzie Guillen hasn't ruled out sitting Infante on Monday in the series finale, too.
"I'd rather have him two days out than 15," Guillen said. "That's why we've got to monitor that very carefully."
In Infante's place Saturday, Emilio Bonifacio played second base, while Chris Coghlan took over in center field.
Guillen flip-flopped the top of the Marlins' order on Saturday to try and kick-start the offense. Bonifacio led off and went 1-for-4, while the slumping Jose Reyes hit second and went 1-for-2 with a pair of walks.
It was the first time Reyes has hit second in the order since July 10, 2010.
The Marlins are 6-3 at home this season, but just 2-9 on the road.
Bonifacio has an 11-game hitting streak against the D-backs.
The D-backs have won six of their last nine in Miami.