In the recently completed TC/UC Asian zone round, I had the opportunity to observe, and to discuss with, the Yonex stringers on site and offsite. I notice that the players were actually taking advantage of the free stringing by cutting their still good strings and then passing their racquets to Yonex for a free restring.
The stringing operation was essentially geared for speed. The 2 stringers told me they average just 5 minutes stringing each racquet. They use 2 knot stringing with just one string. They have a team of about 5 assistants just to weave the main and cross strings before passing them over to the stringers. Despite what they told me that some players requested 4 knot-2 string stringing, I have not seen a single case of this. It is all one string, 2 knot method, for sheer speed in stringing as many racquets as possible. Sometimes, in their haste, the strings just snap and their average 5mins per racquet slips a little.
Almost 90% of the racquets that were strung by Yonex on site were almost all MP99 and MP100, with a few AT700. There were a few Carbonex racquets. There were of course no Gosen racquets, as the lady in the Yonex team rightly said only Yonex racquets were accepted.
I did notice that the racquets that were being strung by Yonex, mainly MP99, MP100 and AT700 were in line with the racquets the players were using, except for the Malaysian players (Roslin uses Yonex and Wong Choon Han has a disguised Yonex)
The tension was anything from 27lbs to 32lbs.