Texas Rangers' Yu Darvish, right center, is congratulated by teammates as manager Ron Washington heads out to the mound to pull him from the baseball game against the Houston Astros on Tuesday, April 2, 2013, in Houston. Darvish pitched eight and two-thirds perfect innings before giving up a hit to Astros' Marwin Gonzalez in the Rangers' 7-0 win. (AP Photo/Pat Sullivan)

Photo by: Pat Sullivan

Texas Rangers' Yu Darvish, right center, is congratulated by teammates as manager Ron Washington heads out to the mound to pull him from the baseball game against the Houston Astros on Tuesday, April 2, 2013, in Houston. Darvish pitched eight and two-thirds perfect innings before giving up a hit to Astros' Marwin Gonzalez in the Rangers' 7-0 win. (AP Photo/Pat Sullivan)