All eyes will be on the Premier League's leading strikers on Saturday when Chelsea visit Manchester City.
Looking at their time in the Premier League, Aguero leads with 112 goals for City in 142 matches, a goals-per-match ratio of 78.9%.
Costa's 42 goals in 64 PL matches represents a ratio of 64.6%, which is the best for a Chelsea player in the Premier League with more than 20 goals.
Aguero v Costa 2016/17 PL stats
|Points won by goals||8||7|
This season Aguero still boasts the better goal ratio, his 10 coming from two matches fewer than Costa.
Three of his strikes, however, have come from the spot, a source of goals which Costa does not enjoy at Chelsea.
With a goal scored from every three attempts this term Costa's shot-conversion rate is significantly higher than Aguero's, who is closer to a return of one in four.
Costa’s shooting accuracy is also better, an impressive 66.7%, compared with Aguero’s 58.5%.
Top five mins per goals 2016/17
Costa boasts a strong record away from home this season, with six goals on the road.
Unfortunately for City, where Matchweek 14 is concerned, Aguero is also better on the road, scoring just two of his 10 PL goals at the Etihad this season.
Aguero/Costa record v top four
|v Man City||-||0/3|
But Aguero has a beter record against Saturday's opponents, scoring six times in nine matches against Chelsea.
By contrast, Costa is still looking for his first goal goal against City at his fourth attempt.