London:Frank Lampard scored his third goal in injury time to give defending champion Chelsea a 4-3 victory over Leicester in the League Cup on Wednesday.
Arsenal also moved into the quarterfinals of England's second-tier cup competition with a 3-0 win at Sheffield United.
Chelsea trailed twice against Leicester, but Andriy Shevchenko and Lampard both scored in the last three minutes for the victory.
Eduardo da Silva scored twice for Arsenal, last season's runner-up, while Tottenham beat visiting Blackpool 2-0 in Juande Ramos' first match as manager.
Record seven-time winner Liverpool beat Cardiff 2-1, Blackburn won 2-1 at Premier League rival Portsmouth, and Manchester City and Everton also advanced with wins.
Chelsea struggled against Leicester, which won the League Cup in 1997 and 2000 but has fallen to the bottom half of the League Championship. Lampard rescued the Blues with his first goals in two months.
Leicester took the lead at Stamford Bridge in the sixth when captain Gareth McAuley headed in a cross from Matt Fryatt.
But Lampard made it 1-1 in the 20th, scoring after Scott Sinclair's header back into the area, and gave his side the lead nine minutes later with a side-footed volley.
DJ Campbell and Carl Cort put the Foxes ahead 3-2 with 16 minutes left and Chelsea manager Avram Grant inserted Michael Essien and Florent Malouda to boost his side.
Shevchenko equalized in the 87th and Lampard then headed into the net to put the Blues into the next round with a sixth straight win in all competitions.
As usual, Arsenal manager Arsene Wenger fielded a mix of reserves and young players.
He started with an entirely different team than the one that drew 1-1 at Liverpool on Sunday, but his team still took the lead after just eight minutes when Eduardo hit a swerving shot into the top corner from just outside the area.
"The first goal came out of nowhere," Wenger said. "He showed tonight what he can do."
Sheffield United, which dropped to the League Championship this season, struggled to create chances against a quick passing Arsenal side and Eduardo made it 2-0 in the 50th when he shot into the bottom corner from a pass by Kieran Gibbs.
Denilson, a 19-year-old Brazilian midfielder, scored the Gunners' third goal in the 69th with a shot from 20 meters that struck a defender and deflected over Bennett.
"The confidence is high," Wenger said. "Throughout the whole season the first team have been doing well and tonight we showed what the rest of the squad are capable of."
Robbie Keane put Tottenham ahead in Ramos' debut at Tottenham, finishing from a headed flick on by Dimitar Berbatov for his ninth goal of the season. Spurs continued to look shaky in defense, but defender Pascal Chimbonda made it 2-0 in the 58th.
Liverpool manager Rafa Benitez mixed reserves with regulars and got a goal from one of each.
Liverpool goalkeeper Charles Itandje thwarted Paul Parry and former Reds striker Robbie Fowler, who drew huge cheers from the crowd on his return to Anfield, before reserve midfielder Nabil El Zhar hit a curling shot for his first Liverpool goal three minutes after halftime.
Cardiff captain Darren Purse made it 1-1 with a 65th-minute header, but Liverpool retook the lead less than a minute later when Steven Gerrard scored from 15 meters after a pass by Yossi Benayoun.
Benni McCarthy's eighth goal of the season and Morten Gamst Pedersen's second led Blackburn over Portsmouth, while Elano converted an 86th-minute penalty to give Manchester City its 1-0 win at Bolton.
Luton held Everton to a goalless draw for 90 minutes before Australia midfielder Tim Cahill scored in extra time to life the Premier League club to victory.
West Ham reached the quarterfinals Tuesday with a 2-1 win over Coventry.