Daily Bagel: Radwanska, Cilic top day's upsets in Barcelona, Stuttgart

The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.

• Rafael Nadal started his Barcelona Open campaign with a 6-3, 6-1 win over Nicolas Almagro. Otherwise it was a day of marginal upsets, with Marin Cilic, Jo-WilfriedTsonga, ErnestsGulbis and Nick Kyrgios all losing to lower ranked opposition.

• Rude homecoming: Sabine Lisicki lost 6-0, 6-0 to Zarina Diyas in Stuttgart and Julie Goerges had three match points but lost 3-6, 6-3, 7-5 to Belinda Bencic. In other upset news from Stuttgart, Sara Errani beat No. 9 AgnieszkaRadwanska 7-6 (8), 6-4 in the first round.

• Man arrested for court-siding—sending live match data to sports bettors—tells the BBC why it was his dream job.

• Tennis fans are still having fun with the Fed Cup no-handshake.

• A must read on the tough scheduling decisions in the ATP minor leagues.

• Here's an exhausted Andrea Petkovic singing a Serbian lullaby and talking music:

[youtube=https://www.youtube.com/watch?v=kr__RxxQR0w&feature=youtu.be]

• Queen's Club will host Great Britain's Davis Cup quarterfinal against France.

• Check out SI Tennis' newest podcast. This week's guest: Jack Sock.

• Get to know 19-year-old Elias Ymer of Sweden. He beat fellow teenager Nick Kyrgios today in Barcelona. He's one to watch.

• In the same vein, here's your primer on 17-year-old Andrey Rublev, who beat Fernando Verdasco on Tuesday and took Fabio Fognini to three sets on Wednesday.

• Interesting update on Wayne Odesnik:

If you were wondering: Wayne Odesnik has bounced back from his 15-year drugs ban and already has a new job. He's selling life insurance.
— Ben Rothenberg (@BenRothenberg) April 21, 2015