ATLANTA — The Seattle Mariners acquired right-handers Rob Whalen and Max Povse from the Atlanta Braves on Monday night for outfield prospect Alex Jackson and a player to be named.

The 20-year-old Jackson was the sixth pick in the 2014 amateur draft. He has hit .233 in three minor league seasons, including .243 with 11 homers and 55 RBIs for Class A Clinton of the Midwest League this year.

“We value upside, and we believe Alex has a lot of it,” Braves general manager John Coppolella told The Associated Press. “We believe in the potential and the person, and we are excited for his future with our organization.”

Jackson was a catcher at Rancho Bernardo High School in San Diego. Adding depth at catcher is an offseason priority for Atlanta. Coppolella would not say if Jackson might be given a look behind the plate in 2017.

Whalen, 22, was 1-2 with a 6.57 ERA in five starts for Atlanta this season and was Double-A Mississippi’s pitcher of the year. Povse, 23, had a 3.36 ERA at Mississippi and Class A Carolina.