Chelsea know that they will have to be at their sharpest if they are to beat Manchester City on Saturday and, ahead of the game, Maurizio Sarri's squad were seen testing their reaction speed in training.
Players including Eden Hazard, Ruben Loftus-Cheek, Andreas Christensen, Ross Barkley and Olivier Giroud were among those to be put through their paces.
Cesc Fabregas, Pedro and Antonio Rudiger were also present as Chelsea geared up for the eagerly-anticipated clash.
Chelsea will be reeling following their defeat to Wolves in midweek and the game against City represents an excellent opportunity for them to respond.
City have yet to lose in the Premier League this season and are ten points clear of Chelsea but will be without striker Sergio Aguero.
The Chelsea players seemed focused in training as they look to return to winning ways.
Having lost two of their last three Premier League games, there is a feeling of concern surrounding Chelsea, who are eager to avoid falling further behind City.
Following the game against City, Chelsea, who have already secured their place in the knockout stages, take on MOL Vidi away in the Europa League on Thursday.
Nesaiknruy_Legend
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Nice to see the team training for something that will be a huge factor in the City game which is Speed. Speed literally stops the City style... sadly our players are slow af so we need another way around it. For us, this line up may be the only way to challenge City equally like Lyon did. The speed Odoi and Pedro provide as well as their traits being better than our other options bar Hazard make them important players to be used. Though I doubt this will be even close to what Sarri plays tomorrow, I still think this is what's needed to win tomorrow...