The Mets are moving to a six-man rotation for the time being, manager Carlos Mendoza tells reporters (including Anthony DiComo of MLB.com). That’ll keep Jonah Tong in the rotation after tonight’s debut. New York will operate with a seven-man bullpen for the next two games but will get an eighth reliever back when active rosters expand on Monday.

Tong worked five innings against the Marlins tonight. He gave up four runs, only one of which was earned after the Mets made a pair of errors in the fifth inning. Tong punched out six without issuing a walk while allowing six hits. Completing five innings was all he needed to do to pick up his first big league win. The Mets pounded Miami pitching for 19 runs in a blowout victory.

The Mets now have a pair of rookies in their starting staff. Nolan McLean, called up two weeks ago, has begun his big league career with a trio of fantastic starts. He fired eight scoreless innings against Philadelphia last time out and has allowed only two runs through his first 20 1/3 innings. David Peterson has been their best starter all year, while Kodai Senga and Sean Manaea are surely locked into rotation spots. It wouldn’t have made much sense to call Tong up just for a spot start.

Clay Holmes has a 4.38 ERA with a well below-average 15.8% strikeout rate in eight starts since the All-Star Break. He has only completed six innings once during that stretch. The Mets could’ve considered moving him to the bullpen, where he’ll probably end up in October if they hold onto a playoff spot. That’s not the plan for now, and Holmes is lined up to start in Detroit next Wednesday.

The Mets have a scheduled off day on Thursday. If they don’t make any adjustments to their six-man rotation, Tong’s second MLB start will come a week from now at Great American Ball Park. That’s shaping up to be a big series with the Reds representing the closest thing to a challenger in the Wild Card race. New York has pulled five games clear of Cincinnati, who have dropped four in a row at a very inopportune time.

The final month presents an evaluation opportunity for New York’s coaching staff and front office. They could go in a number of directions with a playoff rotation. Peterson is probably the favorite for a Game One start, but McLean and Tong each have a shot to convince the club that they’re worthy of a postseason start despite their inexperience.