MLB Week-in-Review: Red Sox promote Rusney Castillo, Drew Smyly doesn't need surgery

Boston promoted a top prospect to help a struggling lineup and the Rays' rotation received some positive news. Here are this week's top headlines:

Marlins fire Mike Redmond, hire Dan Jennings

Jennings moved from the front office to the dugout in an unprecedented move. The Marlins have yet to become consistent, and as a result, the club felt a new manager could provide a spark.

Yankees' Chase Whitley out with Tommy John surgery

Whitley made four starts in 2015, posting a 4.19 ERA and 1.29 WHIP in 19.1 innings to complement five walks and 16 strikeouts.

Mariners acquire Welington Castillo

Castillo has had trouble offensively to this point in 2015 but posted a .274 average and 32 RBIs in 113 games two seasons ago.

Nationals promote Wilmer Difo

Difo batted .315 between both Single and Double-A before being called upon. The infield prospect gives Washington additional depth.

Phillies' Ben Revere drawing interest

The Angels are one of several teams that have been linked to Revere, who is under team control through the 2017 season. He has had success at the plate early with Philadelphia (.268 BA though 39 games).

Rafael Furcal announces retirement

Furcal made his debut in 2000 with the Braves and had difficulty bouncing back from surgery to repair a torn UCL.

Padres seeking shortstop upgrade

Alexi Amarista and Clint Barmes are not having a notable amount of success, and as a result, the Padres are prepared to add a shortstop.

Dodgers' Hyun-jin Ryu set for shoulder surgery

A pair of MRIs did not reveal structural damage or tears but the club is still unsure of Ryu's future.

Drew Smyly does not need shoulder surgery

Instead of a season-ending operation, Smyly is confident he can begin throwing again in eight weeks.

Braves inquired about Jonathan Lucroy

Atlanta could become a buyer come the end of July.

Red Sox promote Rusney Castillo

Castillo was batting .230 in Triple-A before Boston opted to add him to the lineup.