United Cup: Taylor Fritz, Madison Keys give Team USA early lead at mixed teams event

• United States opened Day 1 of United Cup with a pair of wins to take a 2-0 lead over Czech Republic
• American men’s No 1 Taylor Fritz opened tournament with solid win over Jiri Lehecka, while world No 11 Madison Keys followed with a 6-4, 6-3 win over Marie Bouzkova