Daily Bagel: Monfils retires after fall, sends Berdych to Miami quarterfinals

The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.
• Andrea Petkovic beat KarolinaPliskova 6-4, 6-2 to make her second Miami Open semifinal. When asked why she seems to play such great tennis during the spring hard courts, Petkovic's answer was simple: Hormones.
• Nice sportsmanship here from Stan Wawrinka. He overuled an umpire's double-bounce call and offered to replay the point against Adrian Mannarino in Miami.
[youtube=https://www.youtube.com/watch?v=ZNZjdASYW1w]
• Gael Monfils took a bad fall in the second set against Tomas Berdych and was forced to retire, giving Berdych a pass into the quarterfinals.
[youtube=https://www.youtube.com/watch?v=4lIyrv2KDUo]
• Novak Djokovic favors some Davis Cup reform, including the introduction of a fifth-set tiebreaker.
• Unfortunately, Pliskova's practice session with Andy Murray didn't help her today:
@KaPliskova I thought it was you who allowed me to share... Good luck👊
— Andy Murray (@andy_murray) March 31, 2015
• ICYMI: 14 Songs Every Tennis Fan Must Know.
• Spot the tennis players in SI.com's portrait gallery.

Contributor, SI.com Nguyen is a freelance writer for SI.com, providing full coverage of professional tennis both on and off the court. Her content has become a must-read for fans and insiders to stay up-to-date with a sport that rarely rests. She has appeared on radio and TV talk shows all over the world and is one of the co-hosts of No Challenges Remaining, a weekly podcast available on iTunes. Nguyen graduated from the University of California, Irvine in 1999 and received a law degree from the University of California, Davis in 2002. She lives in the Bay Area.