Donaldson (knee) is looking to play Friday for the series opener against the Royals, Gregor Chisholm of MLB.com reports.
Donaldson stated that he didn't believe this was a serious injury and it stemmed from hitting his knee on the concrete while stretching earlier this week. He has dealt with the swelling in the past couple games before getting scratched from the lineup for Thursday's contest. Donaldson is day-to-day for now, but is basically a 50/50 decision for Friday.