Mets interim manager Andy Green lays out what Jonah Tong must show for a call-up

The Mets are leaning into the final months of the season as a measuring stick for the next wave of major-league talent. Interim manager Andy Green, speaking publicly on the team’s immediate plans for its pitching staff, said Robert Stock will get another start through the rotation this turn. Green’s comments also pivoted to Jonah Tong, describing what the organization wants to see from him in the minors before granting the right-hander a call-up.

Green’s framing placed the emphasis on process rather than urgency. According to Green, the organization believes Tong has the underlying ability to pitch at the major-league level, and the task now is confirming that belief through consistent performance and readiness markers in game action. While the Mets have played with purpose since the trade deadline, Green indicated the final couple of months are being used to evaluate players close to the next step.

In that context, a September call-up is not being treated as a reward for one outing, but as the product of a sustained body of work. Green’s approach suggests the Mets are not simply filling roster spots late in the year, but trying to make informed decisions about whether a prospect can manage the jump in workload, command demands, and the quality of opposing hitters that comes with the majors.

Green’s comments about Tong also connect to how teams typically build toward the next season. For a club assessing 2027 contributions, the end of August and September becomes a window for comparing what a prospect looks like in a developmental environment versus how he handles higher-leverage scenarios. If Tong’s work in the minors aligns with what the Mets expect from their big-league rotation and bullpen depth, the organization would appear positioned to move him up.

At the same time, Green’s confirmation about Stock provides a reminder that the Mets are continuing to run regular-season decisions on the pitching calendar, even while evaluating younger options. The rotation spot is meaningful because it affects how long a club can look at a pitcher in different situations, including how he responds when the game dictates pitch management rather than pure stuff execution.

What to watch next for Tong is straightforward: evidence of the “stuff” translating into reliable command and results against stronger competition than he sees in lower levels. If he continues to show progress that matches the Mets’ internal benchmarks, Green’s public comments imply the path to a call-up becomes less speculative and more procedural.

For Stock, the focus is on how he carries the organization’s confidence across another scheduled start. In late-season evaluation, managers often weigh both performance and predictability, and Stock’s next turn could offer another data point for how the Mets balance current needs with the longer view of pitching depth.