The Brazil playmaker returned to training after an extended break following his involvement in the World Cup, and was back in action against Ferencvaros
After an extended break, the playmaker was back in light training with Chelsea on Monday - along with Andre Schurrle, Willian and Ramires - and was thrust into action against Ferencvaros in Hungary on Sunday.
Goal examines how the Blues star fared on his return...
|PERFORMANCE AGAINST FERENCVAROS|
Oscar started on the bench but was called into action early on following an injury to Didier Drogba, who hobbled out of the game before the half-hour mark.
With his side trailing, the Brazilian slotted in alongside Andre Schurrle behind Fernando Torres, but failed to make an impact on proceedings before the half-time break.
Chelsea made several changes after the interval with new signings Diego Costa and Cesc Fabregas both coming on and Oscar appeared to slot in on the right of a front three which featured the former Atletico Madrid striker and another substitute, Mohamed Salah.
But the 22-year-old was also regularly dropping deep and drifting into positions across the forward line.
Chelsea levelled through Ramires, but Oscar's first chance of the game came after 55 minutes, though he was denied by an excellently timed challenge.
He survived a heavy tackle late on in the second half before Cesc Fabregas sealed a 2-1 win with an individual effort, and will be pleased to have built up some match fitness with the new season looming large.
|WHAT DOES THE FUTURE HOLD?|
The pressure is on for Oscar this season. After starting the 2013-14 campaign as Jose Mourinho's first choice No.10, seeing off the challenge of Juan Mata who was forced to depart for Manchester United, the playmaker struggled to last the course. It showed at the World Cup and the playmaker was in desperate need of a break.
While Fabregas and Oscar were both in the side during the second half against Ferencvaros, they could be in direct competition for a place next season .
Fabregas has had much of pre-season to impress during Oscar's post-World Cup recovery period and certainly caught the eye in the second half with a sublime solo effort to clinch the win over Ferencvaros.
If the Brazilian finds himself out of the side for the Premier League opener against Burnley on August 18, he may well struggle to play his way back in.
If Mourinho should decide to sell Oscar - much as he did with Mata - there would be no shortage of suitors for the 22-year-old.
|A GOOD SEASON WOULD BE...|
After a transitional season in 2013-14, Chelsea are looking to reassert their dominance in England and Europe next season, and Oscar will want to be a key part of that.
It will be difficult for the playmaker to keep his place in amongst other supremely talented players - a handful of which have been signed by Jose Mourinho, which he was not.
With Chelsea only likely to play one striker next season, some of the responsibility could fall to Oscar to improve on his tally of 11 goals in all competitions next season as the Blues aim to mount a challenge in the Premier League and Champions League.