Midfielder Frank Lampard scored his 201st Chelsea goal as the Blues moved closer to a return to the Champions League with a 2-0 victory over Swansea at Stamford Bridge.
Lampard, who began the game as a substitute, set up Oscar's opener before converting a 45th-minute penalty to move him within one goal of the club record held by the watching Bobby Tambling.
Last season's European champions were unable to add to their total in the second half as Rafael Benitez's side moved three points clear of rivals Tottenham in the battle for a place in the Barclays Premier League top four and extended Swansea's winless run to six games.
Chelsea's next Premier League clash comes at Manchester United before the London derby with Spurs on May 8 which could prove decisive in the Champions League qualifying race.
For now they remain on course to achieve their two remaining targets this term and they will seek to confirm their place in the Europa League final in Thursday's semi-final second leg with Basle. Victory in Amsterdam on May 15 would provide a fitting finale for Lampard if he does leave Chelsea this summer at the end of his current contract.
His appearance midway through the first half in place of the injured Ramires injected impetus into Chelsea's play. The goal was his 15th of the season and first following seven scoreless appearances, since moving to 200 goals against his former club West Ham on March 17.
David Luiz's presence in midfield allowed Lampard to push forward from deep and the England international fired in a 25-yard shot which Vorm turned around the post.
The hosts' opener came after Terry intercepted a long ball forward before striding purposefully into midfield. He fed Lampard, who in turn found Oscar, and the Brazil forward drilled a shot across goal inside the far post.
Chelsea doubled their advantage before the interval after Juan Mata combined with Hazard before being pulled down by Leon Britton. Lampard fired the ball low into the right corner and immediately Stamford Bridge erupted into chants of "sign him up".
Late on Lampard could not control a bouncing ball in the area and Ba shot straight at Vorm as he chased down Petr Cech's long kick. But Chelsea had to be content with two goals, a clean sheet and Lampard edging closer to the record.