The St. Louis Cardinals optioned rookie Jordan Walker to Triple-A Memphis on Wednesday, the team announced. Walker started just one of the team’s last four games. Utility man Taylor Motter was called up in a corresponding move.

Walker drew plenty of attention for a season-opening 12-game hit streak that matched an MLB record for a player his age. Walker has collected hits in 16 of his 19 starts overall, though his game logs mostly consist of one-hit performances. He’s gotten to two hits on just four occasions and has yet to put up a three-hit game.

Overall, the former first round draftee is hitting .274/.321/.397 with a pair of home runs in 20 contests. That offensive output is almost exactly league average, as measured by wRC+. Since the end of his hitting streak, Walker is 5 for 26 (.192) with nine strikeouts.

With a crowded outfield of Tyler O’Neill, Dylan Carlson, Lars Nootbaar, and Brendan Donovan (to an extent), it’s the perfect time to have Walker hone his skills down in Memphis, if only for a little while.

The 33-year-old Motter has appeared in seven games this year, collecting four hits and two walks through at-bats. He’s a career .192/.264/.310 hitter at the MLB level.