Time-through-lineup splits, 2025

Let's wrap up our mid-season one-split-away theme by looking at the stats and skills posted by starting pitchers as they go through lineups during the game.

There is a clear erosion in ERA and WHIP the more times a SP goes through a lineup during a game. The same holds for their underlying skills, as BPV, K-BB%, and HR/9 also experience significant in-game deterioration.

The level of erosion in these metrics is evident in the following data from 2019 to this point in 2025:

Let's take a look at some significant BPV by time through lineup splits so far in 2025 by focusing on those guys with the widest variances. The goal of this exercise is to identify pitchers who could be an adjustment away from making significant improvement.

   BPV
Name

Almost!

You’re just a few clicks away from accessing this feature and hundreds more throughout the year that have a singular goal in mind: Winning your league. Subscribe to BaseballHQ.com here!

Already a subscriber? Sign in here

More From Starting Pitchers

Kyle Harrison's big step forward in 2026 can be traced to some excellent stats and skills during his home starts.
Aug 15 2026 3:05am
Gavin Williams has become the game's best starting pitcher in the second half, among those with 30+ IP.
Aug 8 2026 3:07am
Payton Tolle's mediocre results in July hid an excellent foundation of skills, putting him in position to be a difference-maker down the stretch.
Aug 1 2026 3:05am
Sean Burke's recent stretch of elite skills has been backed by some significant underlying support.
Jul 25 2026 3:15am
Ian Seymour's recent skill surge and transition back to a starting role give him significant appeal again in deep leagues.
Jul 18 2026 3:07am

Tools