Fernando Alonso remains the most complete driver in Formula One and should stay in the sport for the foreseeable future, according to Emerson Fittipaldi.
Alonso won the drivers' championship in 2005 and 2006 during his time at Renault, before finishing as a runner-up three times with Ferrari.
The Spaniard's returned to McLaren in 2015 has proved fruitless, with disappointing finishes of 17th and 10th at the struggling constructor.
There had been hopes that new regulations in F1 would level the playing field for the coming season, but McLaren endured more problems in pre-season and it is thought Alonso will contemplate his future with the team if he endures another campaign of struggle.
Last year, there were even rumblings that he may retire, but Fittipaldi - also a two-time world champion - expects Alonso, considered by many as one of the most gifted drivers of his generation, to continue enjoying success.
"To me, still today, Fernando Alonso is the most complete driver that's out there racing," Fittipaldi, speaking courtesy of Laureus, told Omnisport.
"He's incredible for testing and he's incredible as a racer. You know the famous phrase, when the flag drops the bulls**t stops. He's always there running very strong but sometimes the equipment is not there.
"He's a world champion and is extremely talented and very intelligent. He's going to leave a lot of legacy.
"I hope he doesn't stop. He has the physical ability to continue for many years, as long as he has the passion then he can continue for many years."
The dominance of F1 by Mercedes has gone unchallenged for the past three seasons, but Fittipaldi - a former McLaren driver - claimed the chasing pack can come back strong.
"Looking at the history of motor racing, the cycle and success of a team always happens," he added.
"Sometimes a team can be three, four or five years competing and winning.
"[But] McLaren can come back very strong, Ferrari can come back very strong, Williams can come back very strong. They've already won many world championships."
|Ausmus won´t return as Tigers manager in 2018|
|Thomas surges to share lead with Casey, Simpson|
|Nadal and Berdych beaten in doubles but Europe dominate Laver Cup day one|
|Mourinho warns Shaw to work hard to regain Manchester United place|
|Ancelotti slams ´slow´ Bayern after Wolfsburg fightback|
|Hull secure play-off spot and effectively end Wigan defence|
|Semedo, Deulofeu left out of Barcelona trip to Girona|
|Gloucester hold off fightback from winless Warriors|
|Conte urges Morata to show Costa aggression|
|Guardiola hopes Aguero breaks City record at home|
|Cheetahs end Leinster´s perfect start, Glasgow thrash Munster|
|Puig breaks fundraising goal for Puerto Rico hurricane relief in 24 hours|
|Paire saves match point to see off Goffin|
|Lille 0 Monaco 4: Falcao hits double as champions romp to win|
|Bayern Munich 2 Wolfsburg 2: Ulreich howler sparks shock comeback|
|De Biasi takes charge of Deportivo Alaves|
|Vikings QB Bradford to miss second straight game|
|Bertasio halfway to maiden professional win|
|Srna vows to clear ´name and reputation´ following doping claims|
|Neymar to miss PSG´s Montpellier clash|
|Tsonga shocked by Struff at St Petersburg Open|
|Costa can win many Atletico trophies, says ex-Chelsea striker Shevchenko|
|NFL plans to fight Aaron Hernandez lawsuit|
|From Maradona to Messi – Barcelona celebrate 60 years at Camp Nou|
|Shakespeare remaining upbeat over Silva saga|
|Alex Sandro replaces Marcelo in Brazil squad|
|Woods still taking recovery slowly despite progress|
|Returning Costa scared of Atletico fitness plans|
|Benevento captain Lucioni fails doping test|
|Valverde dismisses Real Madrid ´crisis´ talk|
|Stoke could have one fit centre-back for Chelsea game - Hughes|
|Zhang to face Krunic in Guangzhou final|
|Roland-Jones an Ashes doubt after suffering stress fracture|
|Bakayoko fit after car accident and Hazard ready to start, says Chelsea boss Conte|
|Rummenigge calls for transfer window to close on July 31 across Europe|
|Nigel Pearson appointed by Belgian side OH Leuven|
|Federer impressed at own longevity on 20th anniversary of rankings entry|
|Rossi returns as Pedrosa sets Aragon pace|
|UEFA inspector to examine disrupted clash between Arsenal and Cologne|
|Mourinho misses out as Allegri, Conte and Zidane battle for Best FIFA Coach of the Year|
|Conte encouraged by Musonda and Kenedy progress|
|Sri Lanka cricketers call for probe into Wickramasinghe allegations|
|Costa lands in Madrid ahead of Atletico return|
|Guardiola endorses Mourinho´s EFL Cup scepticism|
|Messi, Neymar and Ronaldo headline FIFA Best shortlist|
|Conte thanks Costa after Chelsea exit agreed|
|Zidane will not ´go crazy´ despite Real Madrid slump|
|Ruthless Muguruza and improving Kerber seal Tokyo semi-final spots|
|Aubameyang is very happy here, Bosz assures Dortmund fans|
|Madrid confirm Marcelo hamstring tear|
|I hope he doesn´t score! - Zizou wary of Enzo threat|
|Double for Slater as Storm seal Grand Final spot|
|Major players help teams grow - Simeone happy with selection headaches after Costa move|
|England to name Ashes squad on Wednesday|
|Allegri has faith in misfiring Higuain ahead of Turin derby|
|PSG must prove big-club credentials after spending spree - Draxler|
|Ostapenko strides into Korea Open semi-finals|
|Markram to make Proteas Test debut against Bangladesh|
|Not preventing Neymar´s Barca departure a ´bad decision´ - Rakitic|
|Shanghai Shenhua slam ´misleading´ French media over Tevez interview|
|Tentative Rossi back on track at Motorland|
|Teenager Smith named in England training squad|
|There´s no bitterness – Costa ´cool´ with Conte as Atleti return nears|
|Wallabies omit Korczyk for South Africa and Argentina Tests|
|Dagg out until 2018 to rest knee injury|
|Cummins to skip India T20s to focus on Ashes|
|Cubs take firm control of NL Central with win over Brewers|
|Rams hold off 49ers for wild win|
|Copa Libertadores Review: River put eight past Wilstermann, Lanus through|
|Smith slams Australia batsmen after latest collapse|