Jan Vertonghen put Tottenham in front after only seven minutes. Just under quarter of an hour later, Gareth Bale extended Spurs' lead with his 22nd goal of the season in club colors.
Bale was back at the Liberty Stadium only days after Wales lost 2-1 to Croatia there. After Swansea forward Michu reduced the deficit on the 71st minute, the Welshman may have been concerned about losing another lead in an important match.
Instead, Tottenham held on to secure three points—a vital win considering the day's events elsewhere in the Premier League.
Spurs' win saw them climb back up to third in the table after Chelsea lost to Southampton away at St Mary's. Rafael Benitez's decision to make several changes ahead of their FA Cup quarterfinal replay against Manchester United on Monday backfired, and he will take little comfort in not being the first big side to fall victim to Mauricio Pochettino's giant-slayers in recent months.
Arsenal kept in touch with both of their London rivals with a comfortable 4-1 win over Reading at home. Though the Gunners sit four points behind Spurs, they (like Chelsea) still have a game in hand on Andre Villas-Boas' side.
Villas-Boas will be pleased with the way his team responded to three consecutive losses, but they will be looking to refocus again quickly with a big week ahead.
FC Basel visit White Hart Lane on Thursday evening for the first leg of the Europa League quarterfinal. Then the following Sunday, Everton arrive in North London for the first of three massive league games for Spurs, with Chelsea and Manchester City following after that.
Check back on Bleacher Report later on Saturday for a more detailed look at Spurs' victory over Swansea and what it means for them heading into the Basel game.