by Kevin Craig
- John Isner hit the fastest official serve in tennis history with a 157 mph serve late in the third set of his singles match on Sunday against Bernard Tomic. In the match, Isner hit 49 aces and zero double faults. The 49 aces is the second most in a Davis Cup world group match, as well as any four-set match. The most aces hit in a Davis Cup World Group match was by Ivo Karlovic in 2009 when he hit 78 aces, and the most aces hit in a four-set match was by Joachim Johansson who hit 51 aces in the 2005 Australian Open. Sam Groth hit a 163 mph serve in a Challenger in South Korea in 2012, but not recognized by the ATP as an official record due to the inconsistent nature of the type of radar used on the Challenger level. Isner also made tennis history winning the longest match ever played, 11 hours, 5 minutes against Nicolas Mahut 70-68 in the fifth set.
- Marcos Baghdatis surpassed Bjorn Borg for the record of longest Davis Cup win streak. Baghdatis has now won 36 singles rubbers in a row with his most recent loss coming to Irakli Labadze in 2003.
- Jarrko Nieminen of Finland and Emilio Gomez of Ecuador won their Davis Cup singles rubbers on Friday by a score of 6-0, 6-0, 6-0. It was the first time in history that there were two triple bagels in the same day for Davis Cup.
- Lukasz Kubot and Marcin Matkowski won the first set and first match in the World Group in Poland’s Davis Cup history, defeating Carlos Berlocq and Renzo Olivo of Argentina in the doubles rubber.
- The Czech Republic improved to 15-0 when Tomas Berdych wins a singles rubber on the first day and the doubles rubber with Radek Stepanek as they defeated Germany, 3-2.
- Chile has now won five straight ties 5-0 since 2014. They have swept Paraguay, Peru, Mexico, Venezuela, and Colombia consecutively.
- Andrey Rublev won a challenger in Quimper, France this week. The title is the 10th for teenagers on the challenger circuit since the start of 2015 after Taylor Fritz and Hyeon Chung each won three, while Alex Zverev, Jared Donaldson, Borna Coric, and now Rublev have one each.