for any of you interested in earning your "csi meritbadge"... i had 2 racquets in my racquetbag, a tw donnay pro one os and a head fxp rad os. i put the racquetbag in the trunk of my car yesterday (the temp was around 60 degrees f) and drove to 2 hours to my parents' house. when i pulled the bag out and opened it, the mains (wilson super spin blue) had snapped above the grommets/ frame. the crosses (gosen og micro) were all fine. the strings in the fxp os (psgd mains/ pro hurricane crosses) were all fine. both of the racquets were in the same compartment of the racquetbag. what could have possibly caused the mains in the tw donnay to break? feel free to ask anything else and i'll tell you what i can! thanks in advance!!!!