New Delhi, March 11 -- Reigning Grand Slam champions Jannik Sinner and Carlos Alcaraz turned in dominating performances on Sunday to roll into the fourth round of the ATP-WTA Indian Wells Masters. The two hottest young racquets in the sport showed no mercy in quick-fire victories with Australian Open champion Sinner overwhelming Jan-Lennard Struff 6-3, 6-4. The world number two Spaniard allowed his Canadian opponent no room to move, reaching the fourth round with his eighth match win in a row at the event. "It was almost the perfect match for me," said Alcaraz, who broke Auger-Aliassime's serve four times. "I moved well, played aggressive and had less mistakes." Sinner was equally ruthless as he attacked Struff, with the Italian winning his...