Team GB medal hopefuls Caroline Dubois and Pat McCormack sent messages to their rivals with resounding wins in their maiden fights of Tokyo 2020.
Caroline, the younger sister of British heavyweight Daniel Dubois, opened her campaign against Donjeta Sadiku but proved to be too much for her Kosovan opponent.
The former Olympic Youth gold medalist asserted her control from the first bell by landing the more accurate punches with her left hand.
And despite Sadiku settling in the third round, at one stage pinning Dubois to the ropes, the young Brit regained her composure to earn a 5-0 unanimous points victory and progress to the last 16 of the women's lightweight, where she will fight USA's Rashida Ellis.
In action before her, teammate McCormack opened the Day 4 session in a men's welterweight round of 16 clash with Aliaksandr Radzionau of Belarus.
And like Dubois, The 26-year-old world number one also won by unanimous decision, despite one judge believing his opponent had got the better of the opening round.
McCormack's victory sees him join twin brother Luke in the quarter-finals after he himself made it through to the last eight in the lightweight division on Sunday.
Speaking after the bout, McCormack said: "I’m totally focused out here. Obviously, it’s better fighting with a crowd, you catch someone with a good shot and they’re cheering and it spurs you on, but I felt comfortable today.
"There’s no bigger prize than Olympic gold and it is something I have dreamed of since I watched Anthony Joshua and Luke Campbell in London and thought, 'I can do that.'"
McCormack continues his quest for gold against Uzbekistan's Bobo Baturov on Friday.
Olympic boxing day-by-day results
Wednesday sees the first set of quarter-finals get underway at the Kokugikan Arena. Track every result from Tokyo 2020 as it happens.