Any advice on how to repair small water damage to TT floor?

Identical to what happened to me, those could have been my pictures!. I cut pressure treated lumber and screwed it to the frame. (Good excuse to go buy a new impact driver!) Then put in a center support of PT lumber as well as end supports and cut ACX plywood to replace the flooring. Put the A side up so we wouldnt feel any knots through the sheet vinyl flooring. Then used 1/4 round moulding to secure the flooring back down.