The Opener: Acuña, McLean, Nola

Here are three things we’ll be watching for around baseball over the weekend:

1. Braves to activate Ronald Acuña Jr. tonight:

The Braves might not be playing for much except their pride anymore, but it will still be nice for them to have their superstar back in the lineup. Ronald Acuña Jr. hit the injured list at the end of July with a Grade 1 calf strain. Yesterday, the Braves told reporters (including David O’Brien of The Athletic) that Acuña will rejoin the club tonight in Cleveland. Acuña won the NL MVP unanimously in 2023, the only season in the last five in which he has stayed completely healthy. He looked a lot like the MVP version of himself this year in between two stints on the IL, slashing .306/.429/.577 with 14 home runs and a 178 wRC+ in 55 games from May to July. Atlanta will hope he can pick up where he left off.

2. Nolan McLean to debut Saturday:

The Mets are looking to snap out of a downward spiral, and perhaps one of their top prospects is the answer. Right-hander Nolan McLean is widely considered one of the top prospects in the organization and one of the top pitching prospects in the sport. On Saturday, he’ll take the ball for his MLB debut, as he takes over from struggling veteran Frankie Montas in New York’s rotation. The 24-year-old will be in for a challenge in his first taste of MLB action, as he takes on the red-hot Mariners (8-2 in their last 10) and 2025 All-Star Bryan Woo. However, if his performance at Triple-A Syracuse is any indication, he should be up for the task. McLean has a 2.78 ERA in 16 games (13 starts) since his promotion to the Syracuse Mets, with 97 strikeouts in 87 1/3 innings and a groundball rate over 50%. While walks have given him trouble at times, his strikeout rate has only continued to climb; he’s struck out one-third of all batters he’s faced in his last seven games.

It should be noted that Saturday, the day McLean is set to debut, is the earliest date that a team can call up a prospect without the chance that he could accrue enough service to exhaust his rookie eligibility. This means McLean will most likely still be eligible for the Prospect Promotion Incentive (PPI) program in 2026. With this in mind, there’s a good chance he won’t be the only top prospect promoted in the coming days.

3. Phillies moving to six-man rotation:

Aaron Nola, injured since mid-May, will make his long-awaited return to the Phillies on Sunday, the club revealed to reporters (including The Athletic’s Charlotte Varnes). Upon his return, the team will move to a six-man rotation, at least temporarily. Manager Rob Thomson said he will cycle through the six of Nola, Ranger Suárez, Cristopher Sánchez, Jesús Luzardo, Zack Wheeler, and Taijuan Walker “once for sure.” After that, he has “some other ideas how to attack this thing going forward” (per the Philadelphia Inquirer’s Scott Lauber).

Lauber notes that those ideas for the future could include pairing up two starters in a piggyback situation or skipping each starter entirely once through the cycle. For now, however, the Phillies will take the simplest approach. No one in the current starting five deserves a demotion, but they could all use a little extra rest amid a stretch of 24 games in 25 days. The Phillies have enough optionable bullpen arms that they can afford to roster six starters – and therefore only seven relievers. Philadelphia can cycle through arms like Max Lazar, Seth Johnson, Alan Rangel, Michael Mercado, Josh Walker, and the recently-acquired Matt Manning to help keep the bullpen fresh.