Qualifier Arthur Fery delivered a stunning Australian Open win by beating 20th seed Flavio Cobolli on Sunday.
World number one Aryna Sabalenka reached the last 16 at the Miami Open when Elena-Gabriela Ruse retired injured on Saturday, while men's top seed Alexander Zverev beat Jacob Fearnley 6-2, 6-4 to reach the third round.
Playing in only her second singles match of the year, Bouchard blasted a forehand winner to take the first set but Colombian Arango turned the tables in the second set amid a cascade of unforced errors from her opponent.
American lucky loser Reilly Opelka put up an intense battle to stun top seed Daniil Medvedev 7-6(5), 7-6(5) and reach the semi-finals in Den Bosch on Friday.
Belgian third seed Elise Mertens dug deep to save 11 match points and battle past two-time winner Ekaterina Alexandrova to reach the Libema Open final.
MERTENS OVERPOWERS RUSE TO WIN FIRST GRASS TITLE
Sabalenka, Keys reach Wimbledon third round with contrasting victories.
Emma Raducanu strides onto the grasscourts of Wimbledon on Monday as the British number one
Madison Keys is the second-oldest woman to claim her first Australian Open singles title in the Open era.
Jasmine Paolini's exit means only one of the top five women's seeds -- world number one Aryna Sabalenka -- will be in the third round. It is only the second time that this has happened in the professional era after Wimbledon 2018.
IMAGES from Day 1 of 2025 Wimbledon Championships played at All England Lawn Tennis and Croquet Club, London, on Monday.
Rafael Nadal looked razor sharp again during his latest meeting with qualifier Thiem
Playing in his first competitive singles match on the ATP Tour since August 5, the 20-times Grand Slam champion showed no signs of rust in his second round win against Lithuanian qualifier Ricardas Berankis.
A summary of Wednesday's action at the US Open on Day 3.
IMAGES from Day 2 of the Wimbledon Championships from the All England Lawn Tennis and Croquet Club, London, on Tuesday.
The United States survived a fright from little Latvia on Saturday before winning 3-2 in a Fed Cup qualifier as Serena Williams suffered her first career singles loss in the team event. Switzerland, Spain, Belgium, Slovakia, Germany, Russia and Belarus also moved through to the inaugural 12-nation showdown in Budapest.
Images from Day 1 of the 2022 US Open at the USTA Billie Jean King National Tennis Center, in Flushing Meadows, New York, on Monday.