Chelsea will move eight points clear at the top of the Premier League with victory over Tottenham on Wednesday.

Spurs can nudge Arsenal out of top four and end the Blues winning streak if they win a fifth successive league game at White Hart Lane.

Here, Standard Sport looks at the key issues ahead of Antonio Conte's first trip to Tottenham

Toby Alderweireld vs Diego Costa

This should be one of the tussles of the season: arguably the finest centre-back in the Premier League against this term’s top scorer. Costa has 14 league goals this season and has rediscovered the form he showed in his first season in England, when Chelsea were champions under Jose Mourinho. Alderweireld has been slightly short of the outstanding form he showed last season, but this is due to his absences through injury and illness. The Belgian will need to be at his best to stop the rampaging, ruthless Costa tonight.

Can Spurs decode Chelsea’s 3-4-3?

In November’s game at Stamford Bridge, Tottenham played well in the first half, with Kyle Walker and Heung-min Son stopping the surges of Chelsea wing-backs Victor Moses and Marcos Alonso. The game turned on Pedro’s second-half equaliser and Chelsea won 2-1, but Spurs caused them problems.

Can Chelsea handle the pressure?

Chelsea's winning run in the Premier League under Antonio Conte 14 show all Chelsea's winning run in the Premier League under Antonio Conte 1/14 Chelsea's winning run under Antonio Conte Getty Images 2/14 Hull City 0 Chelsea 2 | October 1 Getty Images 3/14 Chelsea 3 Leicester City 0 | October 15 Getty Images 4/14 Chelsea 4 Manchester United 0 | October 23 AFP/Getty Images 5/14 Southampton 0 Chelsea 2 | October 30 AFP/Getty Images 6/14 Chelsea 5 Everton 0 | November 5 Getty Images 7/14 Middlesbrough 0 Chelsea 1 | November 20 Lindsey Parnaby/AFP/Getty Images 8/14 Chelsea 2 Tottenham 1 | November 26 AFP/Getty Images 9/14 Manchester City 1 Chelsea 3 | December 3 Getty Images 10/14 Chelsea 1 West Brom 0 | December 11 AFP/Getty Images 11/14 Sunderland 0 Chelsea 1 | December 14 Laurence Griffiths/Getty Images 12/14 Crystal Palace 0 Chelsea 1 | December 17 AFP/Getty Images 13/14 Chelsea 3 Bournemouth 0 | December 26 AFP/Getty Images 14/14 Chelsea 4 Stoke 2 | December 31 Chelsea FC via Getty Images 1/14 Chelsea's winning run under Antonio Conte Getty Images 2/14 Hull City 0 Chelsea 2 | October 1 Getty Images 3/14 Chelsea 3 Leicester City 0 | October 15 Getty Images 4/14 Chelsea 4 Manchester United 0 | October 23 AFP/Getty Images 5/14 Southampton 0 Chelsea 2 | October 30 AFP/Getty Images 6/14 Chelsea 5 Everton 0 | November 5 Getty Images 7/14 Middlesbrough 0 Chelsea 1 | November 20 Lindsey Parnaby/AFP/Getty Images 8/14 Chelsea 2 Tottenham 1 | November 26 AFP/Getty Images 9/14 Manchester City 1 Chelsea 3 | December 3 Getty Images 10/14 Chelsea 1 West Brom 0 | December 11 AFP/Getty Images 11/14 Sunderland 0 Chelsea 1 | December 14 Laurence Griffiths/Getty Images 12/14 Crystal Palace 0 Chelsea 1 | December 17 AFP/Getty Images 13/14 Chelsea 3 Bournemouth 0 | December 26 AFP/Getty Images 14/14 Chelsea 4 Stoke 2 | December 31 Chelsea FC via Getty Images

Few teams equal records. Even fewer break them. Victory for Chelsea will enable them to match Arsenal’s sequence of 14 consecutive Premier League wins. Another — at Leicester on January 14 — will break it. Whatever players and coaches might argue publicly, such targets play on their minds. How will Chelsea respond?

Who will shackle Dele Alli?

After an inconsistent start to the season, Alli is back to his confident best. Few are as good at identifying and exploiting space. N’Golo Kante and Nemanja Matic will track his forward runs, while Chelsea must stop Alderweireld’s long passes at source.