Houck (3-4) took the loss Friday as the Red Sox fell 5-1 to the Nationals, giving up three runs on six hits and a walk over seven innings. He struck out four.
MLB changed the official scoring on a play during Friday's game, which left Houck charged with three earned runs over six-plus innings, not four, Peter Abraham of The Boston Globe reports.
Houck did not factor into the decision in Sunday's win over the Cubs, allowing one run on four hits while striking out nine over 6.2 innings.
Houck has made the Red Sox's Opening Day rotation, Chad Jennings of The Athletic reports.
Houck allowed one run on two hits while striking out three over 3.1 innings in Tuesday's spring game against St. Louis.
Houck allowed one run on three hits and one walk while striking out four over three innings in Thursday's spring game against Atlanta.
Houck allowed one hit and one walk while striking out five over three scoreless innings in Saturday's spring game against the Nationals.
Houck threw two scoreless innings in Monday's Grapefruit League start against the Phillies.
Houck did not factor into the decision Tuesday, allowing two runs on three hits and four walks over four innings against the Rangers. He struck out four.
Houck (4-9) took the loss Friday, coughing up five runs on eight hits and two walks over 5.1 innings as the Red Sox were routed 11-2 by the Orioles. He struck out five.