Hamilton unsure he can catch Ferrari, Bottas more confident

Lewis Hamilton admitted that two weeks after claiming his sixth drivers' world title he was t sure if he can mount a serious bid in Sunday's Brazilian Grand Prix where he won from pole position last year. 34-year-old Briton, who revealed this week that he is considering his future in Formula One beyond end of his current Mercedes contract next year, wound up fifth after Friday's second session. Hamilton was trailing four-time champion Sebastian Vettel and his Ferrari team-mate Charles Leclerc, Red Bull's Max Verstappen and his own Mercedes team-mate Valtteri Bottas.

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He said he was uncertain that he can reduce Ferrari's advant in qualifying on Saturday. "It started out really well so straightaway, from get-go, we were on a good baseline," he said. "We made a couple adjustments in session and we'll do some work tonight to refine it. "It is quite crucial because we only have two sessions ahead of qualifying to get it right and we have to compact it a little bit more -- and be a bit more precise with changes we've made. "I don't kw if we have three-tenths to get where Ferraris are... Obviously, Ferraris are quick this weekend - or it seems so today. y're generally beating us on straights, so it'll be interesting to see how that pans out." 

Bottas, who will finish as runner-up to Hamilton in drivers' championship, said he felt optimistic.

"I think we look quite competitive, even for qualifying, but we still have lots more to come." 

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