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His F1 challengers
There are four widely-considered challengers to Hamilton's F1 dominance this year. Hamilton's Mercedes driving partner Valtteri Bottas will surely be one of them.
Slowly but steadily the 30-year-old's number of race wins have increased in recent years and four wins for Mercedes last year will give the Finn plenty of confidence.
Having rising star George Russell hot on Bottas' heels could well put further pressure on the latter to deliver consistent podium finishes in 2020.
Formula 1 in 2020 - The teams and the drivers
Red Bull are regarded as Mercedes' greatest challenger this year in the constructors' championship. And with Max Verstappen at the wheel, Hamilton will have something to think about each week.
The 22-year-old German's encouraging performances in pre-season and recent upgrades to his car during the Covid-19 delay could all be important factors as the season plays out.
'We can make it very difficult' - Max Verstappen on Mercedes
Then last but by no means least, there is the Ferrari duo of Charles Leclerc and four-time champion Sebastian Vettel.
Leclerc's newfound aggression witnessed at the latter stages of last season cannot be ignored heading into just his second full year on the grid. Also starting off in Austria, where he finished runner-up in 2019, seems a good place for the 22-year-old to get off to a strong start.
For Vettel, it may have been seven years since his last drivers' championship but he knows what it takes to win it.
Having the pressure of the improving Leclerc in his team could drive him on and - perhaps more importantly in his case, - help him achieve greater consistency.