Buxton was scratched from the lineup for Thursday's game against the Marlins due to right hip flexor soreness, Audra Martin of FanDuel Sports Network North reports.
It's unclear when exactly Buxton suffered the injury, as he homered twice in Wednesday's loss and has gone deep 12 times in his past 20 games. The severity of the issue isn't clear, but any issue is a concerning development given the outfielder's lengthy injury history.