Maria Sharapova was given a wildcard to play in Stuttgart tournament, where she has been champion three times, a move which drew a barrage of criticism from rivals.
Rafael Nadal swept aside Brazilian Rogerio Dutra Silva 6-1, 6-2 in his first appearance on the newly-baptised Rafael Nadal court.
Serena Williams returned to the No 1 spot in the WTA ranking charts on Monday without having played a single tournament since her Australian Open win in January.
The organizers of Stuttgart's WTA tournament sparked controversy by giving her a wildcard to play on Wednesday -- the first day she is eligible to play again -- which has divided tennis.
The world No 7 Spaniard beat compatriot Albert Ramos-Vinolas in straight sets to win the title for the 10th time
The unseeded Indo-Uruguayan pair fought hard to defeat the Spanish seventh-seeded team of Feliciano and Mark Lopez 6-3, 3-6, 10-4 and win their first ATP final together
Rafael Nadal will face Spanish compatriot Albert Ramos-Vinolas, who defeated Lucas Pouille 6 -3, 5-7, 6-1, in Sunday's final.
Serbia's Novak Djokovic loses to Belgium's David Goffin 2-6, 6-3, 5-7 in the last-eight stage in Monte Carlo
Maria Sharapova will know on May 15 if she will be awarded a wildcard for the clay court Grand Slam.
Serena Williams, the world's highest paid female athlete, announced her engagement to Reddit co-founder Alexis Ohanian last December.
If Serena Williams is pregnant, the timing would be a bit of a surprise. Just days ago, she implied on Instagram that she was not pregnant while promoting her friend and former Destiny's Child singer Kelly Rowland's new book for expecting mothers.
World No 2 Serena Williams had posted on Snapchat a picture of herself in front of a mirror with the caption 20 weeks, but later deleted it.
Rohan Bopanna and Pablo Cuevas recorded their first win together at the Masters level when they downed Marcin Matkowski and Alexander Peya in the opening round.
If India beat Canada, they will progress to the elite Davis Cup World Group.
India progressed to the Davis Cup World Group Playoffs by beating Uzbekistan in Bengaluru.
India's Davis Cup captain Mahesh Bhupathi opted for Rohan Bopanna instead of Leander Paes for the doubles tie against Uzbekistan.
India defeated Uzbekistan 4-1 to enter the Davis Cup World Group Playoffs.