12:33pm: The Mariners announced that Kelenic has been placed on the 10-day IL due to a fracture in his left foot. A timeline for his return was not provided.
12:28pm: The Mariners are planning to recall outfield prospect Cade Marlowe prior to today’s game, reports Ryan Divish of the Seattle Times. The 26-year-old will be making his MLB debut when he first takes the field. The team has not yet announced Marlowe’s promotion or a corresponding transaction, but Divish adds that Jarred Kelenic is wearing a walking boot pregame, so it seems likely there’s a pending trip to the injured list on the horizon.
Marlowe, a 20th-round pick in 2019, has elevated his stock from that humble draft status with consistently solid minor league showings — including a combined .287/.377/.487 slash between Double-A and Triple-A last year. Baseball America ranked him 16th among Mariners prospects heading into the season, noting that his speed, glove and power could make him at least a reserve outfielder in the Majors — despite questions about his hit tool.
Those concerns on his bat-to-ball skills were on display last year when he fanned in 38% of his 60 plate appearances at the Triple-A level. He’s pared that back to a more tolerable 25.4% in 2023, but Marlowe’s .255/.332/.461 slash in 319 plate appearances also represents a step back from last year’s production (and checks in below average in the hitter-friendly Pacific Coast League, per wRC+). He’s still popped 11 homers this season and gone 25-for-29 in stolen base attempts this season.
Marlowe is already on the 40-man roster, so the Mariners don’t need to make a corresponding move in that regard. With Kelenic sidelined, Marlowe will be in line for plenty of at-bats in left field. Like Kelenic, he’s a left-handed hitter.
Kelenic, 24, got out to a blistering start this season when he hit .308/.366/.615 in the season’s first month. He’s cooled off considerably since that time but still possesses a solid overall .252/.320/.429 batting line with 11 homers, 24 doubles, a pair of triples and a dozen stolen bases through 326 trips to the plate.
Outfield help already seemed like a potential area of focus for the Mariners in advance of the Aug. 1 trade deadline — they were linked to Mets outfielder Mark Canha just this morning — and the loss of Kelenic only figures to add to that. Offseason signee AJ Pollock has delivered just a .169/.222/.325 slash since signing a one-year deal, and trade acquisition Teoscar Hernandez has fallen shy of expectations with a .240/.294/.419 batting line in his first 395 plate appearances.