I've noticed since Federer started dominating in 2004 that the number of tiebreaks he plays is steadily increasing. Here's a breakdown of the number of breakers and his record in them: Year |TB's| Record 2004 | 25 | 20-5 2005 | 39 | 28-11 2006 | 51 | 37-14 This begs a couple of questions: 1) Was Federer's serve that dominant in 2004 that he was able to close out most sets after getting a break of serve? I do remember his serving was so clutch that year, nailing aces Sampras-style just about everytime he was down breakpoint. 2) Was Federer playing all-out destroy mode in 2004 where he would get up an insurance break a set most of the time back in 2004? He seemed to drop a ton of bagels on players that year too, well at least to Hewitt. 3) Has Federer's return not improved since 2004 and thus not getting as many breakpoint chances throughout a set? I doubt this, but maybe his conversion rate isn't as high? I'd say his serve is better since 2004, though not as many clutch aces and his return is more consistent. However, closing out sets on serve seems a bit shaky - I can recall US Open QF vs Blake and TMC SF vs Nadal as 2 prime examples.