The two Manchester sides secured victories in their matches.
Chelsea’s rollercoaster season continued Saturday as the Blues slipped to a 2-1 defeat at the hands of Mauricio Pochettino’s Southampton side at St Mary’s.
The reigning Kings of Europe now look threatened as their top-four ambitions have been dealt a big blow with the shock defeat.
The Nigerian duo of Victor Moses and John Obi Mikel started for Chelsea as Rafa Benitez’s side dropped to fourth in the table and hold a precarious two-point advantage over fifth-placed Arsenal, who beat Reading 4-1 at the Emirates, in the race to secure Champions League football next season.
Rickie Lambert celebrated his new Southampton contract in style, smashing home an exquisite free-kick which proved to be the winner.
In other venues, Manchester United kept their 15 points advantage on the top of the English Premier League table after recording a lone goal victory over Sunderland at the Stadium of Light. The Red Devils benefitted from a Titus Bramble own goal to keep alive their chase for a record 20th League title.
At the Etihad Stadium, Manchester City, despite literally given up on the EPL title, hammered Shola Ameobi’s Newcastle United, 4-0.
Carloz Tevez, David Silva, Vincent Kompany and an own goal saw Man City cruise to the biggest win of the weekend.
Wigan and West Ham United both recorded home wins against Norwich City and West Brom respectively to make appreciable movement on the log.