Karissa Artingstall (Great Britain) won her second bout in Tokyo, this time eliminating number three-seed Jucielen Romeu (Brazil). Artingstall won by scores of 30-27 on four cards and 29-28 on the last to advance to the quarterfinal round. 

Artingstall made use of her physical advantages over Romeu, pumping a long jab out of the southpaw stance and never remaining a stationary target. Romeu struggled to find an offensive rhythm as a result, spending most of the fight following the Brit around the ring. 

Next up for Artingstall will be Skye Nicholson (Australia), who earned a three-round, split decision win over Im Aeji (South Korea). Nicholson won on four cards (30-27, 30-27, 29-28, 29-28) to overrule a 29-28 card in favor of Aeji in order to provide Australia with its first win in Tokyo.

Irma Testa (Italy) put her height and reach advantages to good use in a three-round unanimous decision win over Michaela Walsh (Ireland). Scores were 30-27, 30-27, 29-28, 29-28 and 29-28 in favor of Testa, who provided the featherweight bracket with its second significant upset Monday afternoon at Kokukigan Arena in Tokyo.

Walsh entered the Olympics as the number-four seed and her aggressive style fared well in the opening round. It was enough to win in the eyes of three of the five judges, though she would fail to win another round on any of the cards for the balance of the fight. 

Testa stuck to her jab and long right hand, doing her best to fight from the outside. Walsh worked the body and tried to make a fight out of it, but was unsuccessful as she is the second fighter from Ireland's team to head home while Testa picks up her second win in three days.

Next to join Testa in the quarterfinal round is Caroline Veyre, who provided the first win for the 2020 Canada Olympic boxing team after outpointing Nikolina Cacic (Croatia). Veyre prevailed by scores of 30-26, 30-26, 30-26, 30-25 and 30-25 to advance to the quarterfinal round.

Cacic advanced to the Round of 16 after outpointing Yarisel Ramirez (USA) in the first day of competition. The win was regarded as a minor upset, though Cacic was no match for Veyre's stellar boxing skills—nor did it help that she received a point deduction in round two for excessive holding. 

Nancy Petecio (Philippines) storms into the quarterfinal round, courtesy of a significant upset. The Filipino southpaw ousted number-one seed Lin Yu-Ting (Chinese Taipei) in a hard-fought but well-deserved split decision win. 

Scores were 29-28 on all five scorecards—three in favor of Petecio and two for Lin, who received an opening round bye but is now dealt an unexpected exit. 

Petecio—the first female boxer from the Philippines to ever compete in the Olympics—will go on to face Yeni Marcela Arias (Colombia), who outlasted Stanimira Petrova (Bulgaria) to claim a split decision win. Arias and Petrova both claimed 30-27 wins on two scorecards each, with Tunisia judge Hichem Menchaoui splitting the difference in awarding Arias the win courtesy of a 29-28 card.

Petecio-Arias will take place July 28. The winner will be guaranteed a medal. 

Maria Claudia Nechita (Romania) spoiled the historic appearance made by Ramla Ali (Somalia), outclassing her more celebrated foe in a three-round shutout on all five scorecards. Full story here: https://www.boxingscene.com/ramla-ali-outclassed-by-maria-claudia-nechita-eliminated-from-tokyo-olympics--159396

Next up for Nechita in the quarterfinals will be Irie Sena (Japan), who keeps the perfect run alive for her hosting nation. Sena advances following a three-round, unanimous decision over Khouloud Hlimi EP Moulahi (Tunisia), winning by scores of 30-27, 29-28, 29-28, 29-28 and 29-28.

Jake Donovan is a senior writer for BoxingScene.com. Twitter: @JakeNDaBox