Daniil Kvyat needs to curb his aggressive driving style and be more disciplined if he is to fulfil his potential in Formula One, according to his Toro Rosso boss Franz Tost.
Kvyat has been involved in a number of incidents during the 2017 season, leading to 10 points on his superlicence and criticism from his fellow drivers.
After Sebastian Vettel was critical of the 23-year-old following the Russian Grand Prix, Fernando Alonso expressed his frustration with Kvyat after a collision in Austria that also accounted for Max Verstappen.
And at the next race at Silverstone he was handed a drive-through penalty after hitting team-mate Carlos Sainz - taking him to 10 points, which means he will be suspended for a grand prix if he gets two more before October.
Despite the criticism Tost remains a fan, but acknowledges the youngster needs to be control his aggression on the track.
"Daniil is doing a good job, apart from sometimes after the start when he is too impatient, or when he risks too much," Tost told Autosport.
"If you look to his speed during the race, if he is just running by himself, his lap times are very, very competitive and very good.
"He wants to be successful, he wants to overtake people where maybe there is no possibility to overtake, and there he must become more disciplined.
"Whether it's frustration or whatever, being in the car, especially at the start, you have to have your emotions under your control, because if you start becoming emotional, you make mistakes, and then you crash.
"The rest is OK because he's giving good technical feedback, he's showing good speed and, driving by himself, he's doing a good job."
|Man City aren´t one of the Premier League´s best ever - Rooney|
|Rose romps to Indonesian Masters title|
|The best answer is laughing - Ronaldo mocks Gremio boss Renato|
|Brisbane Roar 1 Melbourne Victory 2: Williams and Barbarouses boost pre-derby mood|
|LeBron James wants to break ´stereotype´ around ageing stars after passing Larry Bird|
|Hazlewood frustrated as Anderson issues rallying call|
|The Ashes Round-up: Weather holds up Australia|
|Perez keen for ´spectacular´ Ronaldo to never leave Madrid|
|Rain halts Australia charge for Ashes glory|
|Numbers tell the story as Cook´s Ashes woes continue|
|Golovkin, Alvarez scared to face me - Saunders|
|Cook, Root fall as Australia close in on win|
|Knicks top Thunder in Anthony´s return to New York|
|Saunders outclasses Lemieux to retain title|
|Chiefs too good for Chargers, Lions win|
|Australia push further ahead in Perth|
|Kroos: Madrid don´t need added motivation for Clasico|
|Howe discussed Liverpool criticism with Begovic|
|Pellegrino: I can´t control Van Dijk future|
|Perez suggests Madrid unlikely to make January moves|
|Packers activate Rodgers for Panthers clash|
|Gonzalez bids emotional farewell to Dodgers|
|Liverpool scouts to thank for Salah capture, says Klopp|
|Substitutes made the difference - Simeone|
|Sarri praises ´extraordinary´ Hamsik as Napoli go top of Serie A|
|Mutual trust at Man City is ´a dream´, says Guardiola|
|Thorley grabs four in Gloucester rout, Connacht trounce Brice|
|Stoger´s small changes getting Dortmund back on track|
|Atletico Madrid 1 Alaves 0: Substitute Torres breaks LaLiga duck to net winner|
|City defeat a ´good experience´ for Tottenham - Pochettino|
|Fury takes pop at ´carthorse´ Joshua|
|Zidane dreaming of sextuple after Club World Cup success|
|Running man De Bruyne makes it easier to manage City - Guardiola|
|Ronaldo and Zidane hoping for Ballon d´Or winner to retire at Madrid|
|Championship Review: Teenage debutant Maja snaps Sunderland´s home drought|
|In-form Neymar is good for all who love football – Emery|
|Napoli´s record goalscorers - how Marek Hamsik compares to Diego Maradona|
|Leinster rally to beat Chiefs, Bath gain revenge over Toulon|
|De Bruyne eyes titles over unbeaten season|
|Ninja Turtles invade pitch during PSG clash|
|Muller, Heynckes buoyed by Bayern Munich´s edgy victory|
|I´m confident, but what does that mean? - Wenger gives cryptic answer on Ozil future|
|Real Madrid win five trophies in a calendar year for first time|
|It´s nice to know - Hamsik plays down matching Maradona´s Napoli record|
|Borussia Dortmund 2 Hoffenheim 1: Pulisic late show extends perfect Stoger start|
|Manchester City 4 Tottenham 1: Silva-less City continue to set the gold standard|
|Hughes fumes at Lanzini ´dive´|
|Torino 1 Napoli 3: Historic Hamsik strike sends Sarri´s side top|
|Dyche credits Burnley´s resolve in battling Brighton draw|
|Conte refuses to discuss Chelsea interest in ´really good player´ Van Dijk|
|Real Madrid 1 Gremio 0: Ronaldo free-kick secures Club World Cup glory|
|Silva refuses to question Watford´s attitude amid dismal run|
|Wenger hails Ozil´s decisive ´gem´|
|City´s record run unfairly overshadowing Chelsea form - Conte|
|Murray ´normally very reliable´ from the spot - Hughton|
|Stoke City 0 West Ham 3: Returning Arnautovic has the last laugh|
|Rennes 1 Paris Saint-Germain 4: Two goals, two assists for Neymar|
|Hamsik matches Maradona´s all-time Napoli scoring record|
|Apologetic Spalletti had forgotten losing feeling at Inter|
|We stick to the plan – Valverde not risking Dembele before January|
|Watford 1 Huddersfield Town 4: Deeney sees red as Hornets´ slump continues|
|Chelsea 1 Southampton 0: Alonso extends Blues´ home run|
|Arsenal 1 Newcastle United 0: Ozil stunner sees hosts edge back to winning ways|
|Brighton and Hove Albion 0 Burnley 0: Murray pays the penalty for Seagulls|
|McGregor says MMA, not Pacquiao, is next on agenda|
|Stuttgart 0 Bayern Munich 1: Ulreich denies former club with last-gasp penalty save|
|Gattuso tries to shrug off Donnarumma, FFP controversies|
|Inter 1 Udinese 3: Leaders leave door open for Napoli as unbeaten run ends|
|Al Jazira 1 Pachuca 4: Jara & Sagal inspire Mexicans to Club World Cup third place|
|Benteke winning over Palace fans after penalty nightmare - Hodgson|