Question: What sport do both Laura Siegemund and Jamie Murray have in common?

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2016 Ricoh Open – Women's Doubles: Asia Muhammad and Laura Siegemund were the defending champions, but Siegemund chose not to participate this year.  Muhammad played alongside María José Martínez Sánchez, but lost in the quarterfinals to Alexandra Panova and Amra Sadiković. <br>

2016 BGL Luxembourg Open – Doubles: Mona Barthel and Laura Siegemund were the defending champions, but Barthel chose not to participate this year.  Siegemund played alongside Antonia Lottner, but lost in the first round to Annika Beck and Xenia Knoll.

2007 Wimbledon Championships – Mixed Doubles: The mixed doubles event at the 2007 Wimbledon Championships was held over six rounds of competition.  The final took place on July 8 with unseeded pair Jamie Murray and Jelena Janković defeating fifth-seeds Jonas Björkman and Alicia Molik in three sets.  Jamie Murray became the first British Wimbledon champion since Jeremy Bates and Jo Durie won the same competition in the 1987 championships.

2016 Mallorca Open – Doubles: This was the first edition of the tournament.  Gabriela Dabrowski and María José Martínez Sánchez won the title, defeating Anna-Lena Friedsam and Laura Siegemund in the final, 6–4, 6–2.

Jamie Murray: Jamie Robert Murray, {'1': ", '2': ", '3': ", '4': "} (born 13 February 1986) is a British professional tennis player from Scotland.  He is a five-time Grand Slam doubles winner and a Davis Cup champion, currently the world No. 11 doubles player, and a former doubles world No. 1.  Murray is the elder brother of Britain's world No. 3 singles tennis player Andy Murray.

Laura Siegemund: Laura Natalie Siegemund (born 4 March 1988 in Filderstadt) is a German professional tennis player.

2010 TEAN International – Men's Doubles: Jonathan Marray and Jamie Murray were the defending champions, but Marray chose not to participate.  Jamie Murray partnered with Jeff Coetzee.  However, they lost to Rameez Junaid and Niko Karagiannis in the first round.

2017 US Open – Mixed Doubles: Laura Siegemund and Mate Pavić were the defending champions, but Siegemund was unable to compete due to injury.  Pavić played alongside Andreja Klepač, but lost to Alicja Rosolska and Santiago González in the first round.

2016 Engie Open de Biarritz – Singles: Laura Siegemund was the defending champion, but chose not to participate.

Mate Pavić: Mate Pavić (born 4 July 1993) is a Croatian professional tennis player specialising in doubles.  Mate won the 2016 US Open mixed doubles title in partnership with Laura Siegemund, and reached the 2017 Wimbledon Championships men's doubles finals partnering Oliver Marach.

Supporting paragraphs: Laura Siegemund Jamie Murray
Answer: tennis