Roger Federer's Q.F. match at Australian Open, 2013 is vs Jo Wilfried Tsonga to be played on 23rd January, 2013. The match will be the first match of the evening session on the Rod Laver Arena.
The match is scheduled to start at 19:30 Local time (AEST: Melbourne time) or 14:00 IST or 16:30 PHT or 08:30GMT or 09:30 CET or almost 03:30 EST (New York time of Wednesday morning).
Roger Federer and Tsonga have played eleven times before and Roger Federer leads the head to head 8-3 vs Jo Wilfried Tsonga.
Their (Federer vs Tsonga) last meeting was at the finals of World Tour Finals, 2011 & Roger Federer won that match in 3 tight sets.
Federer & Tsonga have met once at Australian Open, that was during the semi-finals of Australian Open, 2010 which Federer won in 3 straight sets. Tsonga has defeated Federer once in a grand slam and that was at Wimbledon's Quarter-Final in 2011.
Considering, Roger Federer's current form at Australian Open, 2013 & dip in Tsonga's form in 2012, clearly Federer will start as the firm favorite for this match.