The Rangers were much better in the second period, outshooting the Jets 15-7 after the spark from Callahan's brilliant short-handed tally.

WSJ: Derek Stepan scores 2 as Rangers beat Jets 4-2

Serve once more dominated in the third set which was also settled by a tie-break, with the Slovaks winning 7-5 to spark wild celebrations in Split.

BBC: SPORT | Tennis | Underdogs seize Davis Cup leads

According to Comscore, it's the most visited fitness site with 7 million users (162 million page views in January), but Spark has taken a low-key, word-of-mouth approach compared to its big bucks advertising competitors like Weight Watchers.

CNN: Virtual meetups spark real fitness