The month began with Additon in the middle of a 31.2-inning scoreless streak that began on May 10 and stretched out until June 19, making it at the time the longest scoreless inning streak this season in all of Minor League Baseball.
The young lefty did not give up a run for 41 days from May 10 to June 19. He went 2-0 and allowed just 12 hits and struck out 29 during the scoreless innings streak, including seven consecutive shutout outings from May 16-June 13.
During the streak he added a stretch of 13 consecutive hitless innings that lasted from May 24-June 6 and included back-to-back hitless appearances on May 29 and June 2.
On June 9, the Midwest League named Additon, the League's 'Pitcher of the Week' after he struck out 13 and allowed just one hit in two road appearances from June 2-8.
Additon was a 47th-round pick of the Cardinals in the 2006 draft, a draft-and-follow selection necessitated after a torn anterior cruciate ligament brought his senior season at Western High School in Davie, Fla., to an early end.
He recuperated in time to pitch for Indian River Community College in the spring of 2007 and finished strong enough that St. Louis signed him to a contract shortly after the season ended.
Not ranked by the Birdhouse in the annual Top 40 Prospect Rankings prior to the 2008 season, Additon is currently ranked 11th in the Scout.com's St. Louis Cardinals Prospect Power Rankings.