What happened: Right-handed pitcher Chad Dallas has been selected to the Major League roster and will be active tonight. In corresponding moves, right-hander Hayden Juenger was optioned to Triple-A, and right-hander Tanner Andrews was designated for assignment.

Why it matters: The roster adjustments provide fresh pitching depth for the active club. Dallas, affectionately nicknamed 'Cheese', coincidentally makes his jump to the big leagues on National Cheese Day, giving his debut a memorable and lighthearted backdrop.

What to watch: Dallas will be available out of the bullpen tonight as he looks to make his first Major League appearance.