How about htis one?

[scyguy]

You are BU in B, R1. Long fly ball to deep CF. R1 is stealing on play, as ball is still in flight, R1 rounds second and slams into F6 who is standing in the baseline. As BU you call obs. R1 then gathers himself and sees CF make a great catch of fly ball. He then retreats to first in a straightline direction and does not retouch second. He makes it back to first before throw beats him. Now, what do you do as BU??