In 22⅓ postseason innings, Eovaldi allowed only four earned runs, throwing 100 mph fastballs that were unhittable.
The right-hander handcuffed the New York Yankees in Game 3 of the American League Division Series, allowing one run in seven innings of a rout at Yankee Stadium. He stifled the Houston Astros in Game 3 of the AL Championship Series, going six innings and getting the win. He also made three eighth-inning relief appearances that required him to record 10 outs against the Astros and Los Angeles Dodgers.
Eovaldi became a folk hero in Boston with a six-inning stint in the 18-inning loss in Game 3 of the World Series in Los Angeles. Coming on in the 12th inning, Eovaldi threw 97 pitches in relief. Though he got the loss, teammates and coaches called the outing inspirational, citing his stamina and willingness to give his all.
２２．１回投げて、４自責点。１００マイルの速球が効いた。
地区優勝シリーズ ヤンキース戦
第３試合、ヤンキースタジアムで、７回１失点
リーグ優勝決定シリーズ アストロズ戦
第３試合、６回投げて勝利
ワールドシリーズ ドジャース戦
第３試合 １８回の延長戦、１２回から６回・９７球投げる。敗戦。
その他、アストロズ戦、ドジャース戦で３度８回に中継ぎで１０のアウト。