After her Thursday thrilling 3r Madrid win over Victoria Azarenka, Serena Williams extended her win streak to 26. But that’s not her longest!

Winning Streaks by Serena Williams
34 – Serena Williams (2013 Miami to 2013 Wimbledon 4r – l. to Lisicki)
26 – Serena Williams (2014 WTA Finals RR to present)
25 – Serena Williams (2013 US Open to 2014 Australian Open 4r – l. to Ivanovic)

Serena also has an active win streak in Premier Mandator events (Indian Wells, Miami, Madrid, Beijing), winning her last 49:

(2012 Miami QFs – l. to Wozniacki)
2012 Madrid – won title (6-0)
2013 Miami – won title (6-0)
2013 Madrid – won title (6-0)
2013 Beijing – won title (6-0)
2014 Miami – won title (6-0)
2014 Madrid – walkover in QFs (3-0)
2014 Beijing – walkover in QFs (3-0)
2015 Indian Wells – walkover in SFs (4-0)
2015 Miami – won title (6-0)
2015 Madrid – Into QFs (3-0)