Andy Murray made his International Premier Tennis League 2015 debut on Tuesday, spearheading the Singapore Slammers to a 27-24 victory over the UAE Royals in Dubai. The Scot, appearing in top form, toppled Roger Federer in the final set of the night to seal the win for the Slammers. The IPTL, featuring a team format with both men’s and women’s singles, men’s and mixed doubles, and men’s legend’s singles, is in its second season. A match consists of five sets, one of each category. Murray has had a busy schedule of late, competing in the ATP World Tour Finals at the O2 in London and then leading Great Britain to a win over Belgium in the Davis Cup finals last month. The world No. 2 made cameo appearances in the mixed doubles and men’s doubles prior to defeating Federer. Murray partnered with Belinda Bencic against Daniel Nestor and Kristina Mladenovic in the mixed doubles, but midway through the set was substituted for by Nick Kyrgios. The substitution was for naught as the Royals still won 6-3. Federer and partner Marin Cilic then took on Kyrgios and Marcelo Melo in the men’s doubles, and after an early break had a chance to serve out the set at 5-4. But in a reverse of the previous set, Kyrgios was subbed for by Murray, who helped Melo break back to force a tiebreaker, which they won comfortably 7-2. Murray, complements of a break in the second game, raced to a 5-2 lead in the marquee final set of the evening. He then held three set points on Federer’s serve in the eighth game, but the Swiss erased them all and proceeded to break at love in the next game. Murray answered with a break back of his own at love for the set. The Slammers improved to 5-3 and the Royals dropped to 3-5.