Red Sox lefty Jon Lester was sent down to Double-A Portland today. Lester is 2-0 with a 5.67 ERA in six starts since being recalled from Pawtucket on July 23.
Lester will miss one start and is scheduled to return to start for the Red Sox on September 2.
Julian Tavarez is expected to take Lester's start on Sunday.
The team recalled lefthanded pitcher Javier Lopez from Triple-A Pawtucket.
Lopez is 2-1 with a 3.17 ERA in 17 appearances with Pawtucket this season. He has not allowed a run in his last seven outings with the PawSox, covering 3.1 innings. The lefthander will be making his third stint with the Red Sox this season and is 2-1 with a 2.87 ERA in 44 appearances.