Levesque is a six-year Sounders veteran, having joined Seattle officially in 2004 after playing three games for 2003 MLS champion San Jose, which had selected him earlier that year in the SuperDraft and loaned him to the USL team.
He scored eight goals in 2004 and led the team with 10 goals in its championship season of 2005. In 2007, he was named All-USL second team, as the Sounders again won the title. He ranks fifth in franchise history with 27 goals, and seventh in assists (16) and games played (130).
A graduate of Stanford University, Levesque played for Cardinal teams that reached the NCAA semifinals in his junior year and the championship game as a senior. He played alongside Graham at Stanford and for the USL-1 Sounders.
"Roger is a player who has been committed to the Seattle area," said head coach Sigi Schmid. "He is very active and has a very good work rate."
Scott, 28, is another two-time USL champion, having played the past seven seasons for Seattle after finishing his college career at Gonzaga. In 139 league games he scored eight goals and registered three assists. Like fellow Zag Brian Ching, he is a native of Hawaii.
"Zach is a very hard-nosed consistent defender, who takes a lot of pride in his defending play," said Schmid. "He helps solidify our defense and make us stronger."
Seattle plays its first MLS game Thursday against New York at Qwest Field.