Daily Bagel: Borna Coric hires former Slam champion Thomas Johansson

The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.
• Roger Federer opened his Istanbul Open campaign with a 6–2, 7–5 win over JarkkoNieminen. He'll play Daniel Gimeno-Traver in the third round.
• Top seed Garbine Muguruza was knocked out of Marrakech, losing 7–6 (4), 7–6 (6) to Kristina Mladenovic. Top seed Feliciano Lopez lost to Robin Haase 4–6, 7–6, 6–4 in Estoril.
• No. 103 Denisa Allertova beat Alize Cornet 3–6, 7–5, 6–2 in the second round of the Prague Open. Cornet has yet to beat a top 30 player this season.
• Borna Coric has hired Australian Open champion Thomas Johansson. The two will begin working together at the ATP 250 event in Nice the week before the French Open.
• It happens to the best of us: Little boy confuses The Joker with "The Djoker":
[youtube=https://www.youtube.com/watch?v=bpl-cAAUj3o]
• Jeff Sackman at Tennis Abstract takes a statistical look at Novak Djokovic's current stretch of domination.
• The Madrid Open has officially confirmed Djokovic will not play in the tournament next week.
• Frances Tiafoe, who just signed with Jay Z's Roc Nation, beats top seed Facundo Bagnis in the Tallahassee challenger and gave a proper salute to his new agency:
17-y.o Frances Tiafoe continues his great spring, beats top seed Facundo Bagnis in Tallahassee. Threw up Hova hands. pic.twitter.com/moIfx1411h
— Ben Rothenberg (@BenRothenberg) April 29, 2015

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.