Sean Manaea Returns to the Bay, Signs With Giants

It’s been a relatively quiet offseason for the San Francisco Giants, who signed outfielder Mitch Haniger but have come up empty on bigger names including Trea Turner, Kodai Senga, and, most notably, Aaron Judge. On Sunday, though, they got back in action, inking a deal with left-handed pitcher Sean Manaea for two years and $25 million, with an opt-out after 2023.
At age 30, Manaea tested the open market as a free agent for the first time in his career. In 885 career innings, he has almost defined what it means to be a league-average pitcher, with a 4.07 ERA (99 ERA-) and 4.06 FIP (98 FIP-). While he’s made 30 starts in a season just once and missed almost the entire 2019 season with injury, he’s been consistently available throughout his career and has averaged over 5.5 innings per start, well above average in today’s game. While Manaea had a very good 2021 season, during which he set a career high in strikeouts while walking a minuscule 5.4% of batters and posting an 88 FIP-, his performance largely regressed after being traded to the Padres just before Opening Day this year. His strikeout rate fell, his walk rate went from elite to average, and his home run rate spiked, leading to a career-worst 4.96 ERA even in a lowered offensive environment.
So what caused this significant regression in performance? First, let’s examine Manaea’s pitch mix. The bread and butter of his arsenal is a low-90s sinker that he throws over 60% of the time, but its true shape lies somewhere between that of a sinker and a four-seam fastball. In 2022, the pitch had 2.4 fewer inches of drop than other sinkers thrown in the same velocity band, with about an inch less horizontal run. Read the rest of this entry »






