The Dodgers will promote right-handed pitcher Walker Buehler, their 2015 first-round draft pick, to Double-A Tulsa, according to multiple sources. Buehler was transferred to extended spring training Tuesday as a precursor to his promotion.Buehler struck out eight batters in 3? innings Monday for Single-A Rancho Cucamonga, the latest in a string of outstanding starts to begin the season.