The Washington Nationals returned from rehab assignment and reinstated right-handed pitcher Trevor Williams from the 60-day Injured List and optioned right-handed pitcher Zach Brzykcy to Triple-A Rochester on Friday. Additionally, the Nationals transferred right-handed pitcher Joan Adon to the 60-day Injured List. Nationals President of Baseball Operations and General Manager Mike Rizzo made the announcements.

Williams, 32, went 5-0 with a 2.22 ERA in 11 starts prior to being placed on the Injured List with a right flexor muscle strain on June 4. He struck out 47 batters, walked 16 and allowed just two home runs in 56.2 innings as the Nationals went 9-2 in his 11 starts prior to the injury. Williams allowed two earned runs or fewer in nine starts and pitched to 1.80 ERA (6 ER/30.0 IP) in his last six starts.

Williams made two rehab starts with Double-A Harrisburg. He tossed 7.1 innings across two starts on Sept. 10 and Sept. 15.

In two seasons with the Nationals, Williams is 11-10 with a 4.61 ERA in 41 starts. He is in his ninth professional season and is 49-54 with a 4.34 ERA in 200 career games (159 starts).

Brzykcy, 25, appeared in six games out of Washington’s bullpen. He made his Major League debut on Sept. 1 vs. Chicago (NL).