Roger Federer reached 23 consecutive Grand Slam semifinals. This extraordinary streak ran from Wimbledon 2003 through the 2010 Australian Open, covering nearly six years of major championships.
Federer’s run began as his attacking game matured into a dominant all-court style. During the streak, he won 12 Grand Slam titles and reached several other finals, including four straight French Open finals from 2006 through 2009. His consistency was especially remarkable because the four majors use different surfaces and playing conditions.
The sequence ended at the 2010 French Open, where Federer lost in the quarterfinals to Robin Söderling. That defeat stopped both his streak of 23 consecutive semifinal appearances and his run of reaching at least a Grand Slam semifinal in every tournament since Wimbledon 2003.
This record is often confused with Federer’s 36 consecutive Grand Slam quarterfinal appearances, another major record associated with his peak years.