Dele Alli enjoyed the dream Milton Keynes homecoming as he scored the winning penalty that sent Tottenham past Watford in the Carabao Cup.
Alli, who joined Spurs from MK Dons, returned to his former stomping ground and having drawn his side level in normal time, then sealed a 4-2 penalty shootout win after a lively finish saw the contest end 2-2 after 90 minutes.
Watford had gone in front 39 seconds into the second half through Isaac Success but Alli wiped that advantage out from the spot with 10 minutes to go after being fouled by Christian Kabasele, who was sent off.
Six minutes later Spurs, playing at the home of the League Two outfit because Wembley is unavailable, went in front through Erik Lamela, only for their former player Etienne Capoue to level with a heavily deflected effort and send the tie to penalties.
After Paulo Gazzaniga saved from Capoue and Quina, it was left to Alli to send his side through.
Arsenal survived a second-half rally from Brentford as a Danny Welbeck double proved enough to seal a place in the fourth round of the Carabao Cup.
The Gunners, beaten finalists in this competition last season, were pushed all the way by a much-changed Brentford side but showed enough to advance with a 3-1 win.
At a sparsely populated Emirates Stadium - not helped by a London Underground strike - Welbeck scored twice in the first half to ensure safe progression.
The visitors were the better side after the interval and gave themselves a fighting chance of an upset courtesy of a fine free-kick by Republic of Ireland midfielder Alan Judge, only for substitute Alexandre Lacazette to secure the win with a stoppage-time effort.
West Ham romped to an 8-0 victory at home to Macclesfield with Robert Snodgrass (2), Lucas Perez, Ryan Fredericks and debutant Grady Diangana (2) all scoring their first goals for the club.
Michail Antonio and Angelo Ogbonna were also on target as the Hammers registered their first home win of the season and their biggest victory in 35 years.
West Ham rarely make such short work of lower-league opposition in the cup competitions - the memories of defeats to Wrexham, Northampton, Stockport and Aldershot among others still linger while they trailed AFC Wimbledon after just a minute in the previous round.
They were almost behind again when Macclesfield, without a win all season, ventured forward and James Pearson's throw-in found Harry Smith, whose close-range effort was clawed away by Adrian.
Yet that was the only moment of mild discomfort the hosts suffered all night against the Football League's bottom club as they threatened to beat their previous record win, 10-0 against Bury in the same competition in 1983.
Ireland international Declan Rice crossed for Antonio to head the opener in the 29th minute.
Nottingham Forest hung on to beat Stoke 3-2 at the City Ground to book their first fourth-round spot for 14 years.
Forest were 3-0 up after 50 minutes as goals from Simon Osborn, former Ireland striker Daryl Murphy and Joe Lolley put them firmly in the driving seat, but Benik Afobe pulled a goal back before the Reds were reduced to 10 men when Diogo Goncalves was sent off.
Saido Berahino then set up a frantic last few minutes with a second Stoke goal, but Forest rode out the storm to clinch a third straight victory.