Missing leather (flip-flop) sandal @ Blackwelder volleyball court

I am looking for a missing sandal left at the volleyball court between Blackwelder and Campus Drive.

I left a pair of Rainbow light brown leather flip-flop sandals next to the court. One was left on either side of one half of the court to mark a shorter boundary. I realized the sandals were missing last night and went looking this morning but only one (the right foot) was there.

If you have or have seen my other sandal, please let me know. Thanks in advance for your help!!