Diamondbacks designate 3B Emmanuel Rivera for assignment

(Photo credit: Rob Schumacher/Arizona Republic / USA TODAY NETWORK)The Arizona Diamondbacks designated third baseman Emmanuel Rivera for assignment hours before Thursday's season-opening game against the Colorado Rockies.

The move was reportedly made to open the final spot on the 26-man roster for infielder Blaze Alexander, who batted .400 with two homers and eight RBIs during 55 spring-training at-bats.

Rivera shared