The Padres have placed young lefty Joey Lucchesi on the 10-day DL, per a club announcement. He’ll be replaced by infielder Carlos Asuaje, who had just been optioned down.

A hip strain is the official diagnosis for Lucchesi, who has been a revelation as a rookie. In his nine starts, he has reeled off 47 1/3 innings of 3.23 ERA ball with 9.1 K/9 and 2.0 BB/9. It is not known how long he’ll miss, but the 24-year-old will surely be handled with care by the Friars.

There’s no reason at present to believe that Lucchesi is dealing with a significant problem. If anything, early indications are that it’s not a major issue, as MLB.com’s AJ Cassavell wrote after Lucchesi threw five frames last night.

Erring on the side of caution is generally good policy with respect to young hurlers, particularly in the midst of a season that is exceedingly unlikely to result in a postseason berth. In this case, too, Lucchesi may be best off with at least some loose limitations on his workload. Last year, he threw 139 frames, adding nearly one hundred frames to his 2016 tally and representing a big step up from his first year as a professional.