Serena Williams avenged her heaviest Grand Slam defeat with a comeback 2-6, 6-3, 6-2 win over Garbine Muguruza to reach the Australian Open quarterfinals. Paul Millsap scored 20 points and Al Horford added 19 as Eastern Conference-leading Atlanta topped the Minnesota Timberwolves 112-100, extending the Hawks' club record with their 16th straight win. --ARSENAL, WEST HAM, ASTON VILLA STEM FLOW OF UPSETS IN FA CUP Arsenal, West Ham and Aston Villa redressed the balance for Premier League teams after a flow of upsets in the FA Cup, securing narrow wins over awkward lower-league opposition to advance to the fifth round