He was charged with the loss in each contest, but threw two complete games and compiled a decent 3.18 earned run average.

The remainder of his pro career would be spent as a major leaguer, initially during the manpower shortage caused by World War II.

As a member of Washington's four-knuckleball-pitcher starting rotation (along with Mickey Haefner, Dutch Leonard and Johnny Niggeling), Wolff helped lead the Senators to a second-place finish, only 11⁄2 games behind the eventual world champion Detroit Tigers.

He posted a 20–10 won–lost record and a 2.12 earned run average, and placed in the American League's Top 10 in multiple statistical categories:[1] Wolff threw a one-hit shutout on June 19 against Philadelphia at Griffith Stadium, allowing only a fourth-inning double to Hal Peck.

Wolff returned to the Senators' rotation in 1946 and led the staff with a 2.58 ERA in 122 innings pitched, but he fashioned only a 5–8 won–lost mark.