Astros starter Dallas Keuchel struggled a bit with his control Tuesday, in a 6-5 loss to the Nationals.

Keuchel walked a season-high four batters in the outing, leading to his shortest outing since his first of the season. He was charged with four runs on six hits in the game, while striking out four batters on 105 pitches.

Keuchel fell to 8-4 with the loss, while his ERA rose to 2.63. He still ranks sixth in the American League in ERA and fourth in WHIP (1.05) heading into his next outing, set for Sunday in Tampa.