Cesc Fabregas tops WhoScored's list of debuts from the weekend but you might also be surprised to see Patrick van Aanholt and Andrew Robertson in there...
We could have done practically a whole quiz on Chelsea's loanees but instead we've gone for the traditional one question per club...
1) What's the name of the 17-year-old German who made his PL debut for Arsenal this season?
2) Which England Under-21 player has missed the majority of Villa's season after a second serious knee injury?
3) What's the nationality of 18-year-old Chelsea defender Nathan Ake, who made his PL debut this season?
4) Who is the only teenager to have played in the PL for Everton this season?
5) One point each for the two countries represented by Fulham teenager Kerim Frei...
6) Name two of the three teenagers who have played for Liverpool in the PL this season.
7) At which struggling Championship club is City youngster Karim Rekik currently on loan?
8) Who is the only teenager to have played in the PL for Manchester United this season?
9) What's the name of the ginger 18-year-old striker who has twice come off the bench for Newcastle in the league this season?
10) Norwich loanee Harry Kane won Young Player of the Season at which club last season?
11) Name either of the two Championship clubs current QPR loanee Andros Townsend played for last season.
12) From which club did Reading sign 21-year-old Hope Akpan in January?
13) Sir Trevor Brooking described which Saints youngster as 'technically very gifted'?
14) Who joined Stoke in January and became their youngester PL player of the season the following month when a few days short of 23?
15) For which club did Connor Wickham score his one league goal this season?
16) Which 19-year-old has established himself in the Swansea and Wales sides this season?
17) Which England Under-21 midfielder has made seven substitute appearances in the Premier League?
18) From which club did Chelsea sign West Brom's current star teenager Romelu Lukaku?
19) Which former West Ham captain's son has played in the PL this season at the age of 18?
20) What's the name of the Manchester United teenager who has scored for Wigan this season?
The answers are here