F1 returns from its summer break at this weekend's Dutch Grand Prix with 10 more races to go in what has been a season dominated by Max Verstappen and Red Bull.
The Dutchman can equal the record for most victories in succession with a win at his home race having won the last eight races.
But before track action gets back underway, here's a rundown of all the teammate head-to-head battles entering the second half of the campaign.
NB: AlphaTauri has been excluded due to the recent driver swap.
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Red Bull
Verstappen is well on his way to a third consecutive world title having dominated the first 12 races.
The Dutchman out-raced teammate Sergio Perez 10 races to two, amassing 314 points to the Mexican's 189.
He finished on the podium at every single event despite a number of lowly starting positions, with Perez picking up only seven top threes by virtue of his rough patch between Monaco and Hungary.
Perez only out-qualified Verstappen on two occasions, whilst neither driver failed to finish a race.
Mercedes
George Russell may have usurped Lewis Hamilton in their first year as teammates but the seven-time champion has fought back this season to take a comfortable hold in the intra-team battle.
Hamilton has defeated Russell nine times out of 12 in races, securing 49 points and three more podiums than last season's São Paulo Grand Prix winner.
Qualifying is a much tighter prospect, with Hamilton leading seven-five, whilst Russell has twice retired from Grands Prix this term.
Aston Martin
The Aston Martin head-to-head record makes for grim reading for Lance Stroll.
Fernando Alonso has defeated the Canadian in 11 of the 12 events so far, heading Stroll by 102 points in the Drivers' standings.
The two-time champion has six podiums this term with Stroll yet to achieve a top three, whilst the qualifying record stands at 10-two to Alonso.
It is worth pointing out, however, that Stroll was battling injury and rehab early in the season after a pre-season accident.
Ferrari
One of the most closely-matched teammate battles on the grid is at Ferrari, where Charles Leclerc is narrowly edging Carlos Sainz.
The Monégasque leads the race head-to-head seven-five, securing 99 points to Sainz's 92 so far.
But Leclerc has secured the headline results with three podiums, whilst he also leads the qualifying battle eight-four.
McLaren
The disparity between McLaren drivers does rookie Oscar Piastri an injustice if you don't take note of his individual performances.
The Australian has been beaten on nine out of 12 weekends so far and trails his more experienced teammate Lando Norris by 35 points.
Briton Norris has taken two podiums since a major upgrade package was added to the MCL60 at the Austrian Grand Prix and has out-qualified Piastri on 10 occasions.
Alpine
Pierre Gasly tends to carry the spotlight over Esteban Ocon, but it is the latter that is carrying the torch for Alpine - albeit by a narrow margin.
With two double-DNFs for the team, Ocon leads Gasly five-four in races and holds a 13-point margin over his countryman by virtue of his Monaco Grand Prix podium.
The duo are neck-and-neck in qualifying - who will emerge on top in the second half of the season?
Williams
Alex Albon has given rookie Logan Sargeant a baptism of fire in F1.
The former Red Bull driver has out-raced the American on 10 occasions, securing 11 points from three points finishes.
Qualifying has been a whitewash so far, but there have been plenty of positives for Sargeant to build on for the final 10 races.
Haas
It's as tight as it could be in the Haas head-to-head between Nico Hulkenberg and Kevin Magnussen.
The race results are tied at six apiece, with both drivers securing two points finishes so far.
But Hulkenberg has nine points to Magnussen's two, whilst the German has dominated qualifying
Alfa Romeo
Zhou Guanyu may have finished behind teammate Valtteri Bottas on more occasions in both races and qualifying, but the Chinese driver has secured more points finishes.
Bottas is eight-four up in races and has scored one more point than Zhou, but the sophomore driver has secured two top tens.
The Alfa Romeo squad will need to find improvement before the end of the season if it is to out-score rivals Haas and Williams.
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