Practice One of the Monaco Grand Prix had to be red flagged after a loose drain cover flew into Jenson Buttons McLaren, badly damaging the car. The session, which Lewis Hamilton dominated, was minutes from its conclusion when Nico Rosberg dislodged the cover just after Sainte Devote, catapulting the piece backwards.It shattered as it took a chunk out the front right side of Buttons MP4-31, while Rosberg also suffered a back left puncture in his Mercedes. It went through the front-wing, suspension and brake intake, reported Button to Sky Sports News HQ. It was an incident that we definitely dont want to see again. We were lucky in a way that it only damaged the car.P1: Hamilton sets stunning pace P1 couldnt be restarted after the incident, and FIA race director Charlie Whiting took a trip around the track following the session to double check if there were any other errant drainage issues.Its unacceptable in many ways because these things should be checked, said Sky F1 pundit Johnny Herbert. They should be welded down.When is the Monaco GP on Sky?At first, the Virtual Safety Car was deployed after Rosberg reported his puncture after the first corner, but the red flags soon came out as it became evident that his and Buttons damage was not the result of an on-track collision.Drain covers are usually welded down on street circuits, though problems have arisen in Monte Carlo before. Back in 2010, Rubens Barrichello had his race ended after a loose drain cover caused a suspension failure in his Williams. Felipe Massa clips the wall at Sainte Devote in Practice session one at the Monaco GP. Button and Rosberg werent the only drivers facing problems in Thursday practice, with a lack of grip catching many out. Felipe Massa crashed into the wall at Sainte Devote, while Jolyon Palmer collided with the barrier out of Tabac.Watch the Monaco GP live on Sky Sports F1. The race starts at 1pm on Sunday, with build-up underway at 11.30am. Or watch the race without a contract for £6.99 on NOW TV. Also See: P1: Hamilton sets stunning pace When is Monaco on Sky F1? Bianchis family to take legal action WATCH: F1 Report Monaco GP Bryce Love Womens Jersey . This should be celebrated because it will not always be this way. With the amount of money given to players by their clubs these days, it is a wonder that so many of those teams allow the sport to continue to take away many of their assets so they can play for a different team in the middle of their season. Dexter Manley Youth Jersey . PETERSBURG, Fla. http://www.redskinsrookiestore.com/Redskins-Landon-Collins-Jersey/ . Louis Blues. 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SINGAPORE -- For every grand prix this season, the only question before the race has been which of the two Mercedes drivers would win.At this weekends Singapore GP, there is a refreshing prospect of a genuine challenge in the night race to the Lewis Hamilton and Nico Rosberg duopoly.Having won all but one race this season -- the Spanish GP where the two rivals collided on the first lap -- Mercedes will start favorites again this weekend, but not by much.The tight, twisty and bumpy nature of the Marina Bay street circuit largely cancels out Mercedes speed advantage over chief rivals Red Bull and Ferrari, and recent history indicates those F1 rivals should thrive this weekend.On the similar Monaco circuit earlier this year, Red Bull had Mercedes measure and probably would have won if not for its pit-stop farce. Daniel Ricciardo came in for fresh tires before the pit crew was in position, so he had to drive back out and come in again next time around.And last years Singapore race proved a difficult one for Mercedes in qualifying on the third row of the grid and unable to mount any challenge. Ferraris Sebastian Vettel took a comfortable victory.Ricciardo was bullish about Red Bulls prospects this weekend, given the strong parallels with Monaco.We look at it as a good chance to get the victory Ive been after this season, Ricciardo said Thursday. Im not going to put too much pressure on myself or them (the team) for this weekend but deep down, we want to win. We are a group of winners, so if there is pressure on us to get it done this weekend, we will thrive on that.His young teammate Max Verstappen, who took the only non-Mercedes victory this year in Spain, was cautiously optimistic, saaying Fridays practice sessions will shed more light on whether Mercedes is vulnerable.ddddddddddddWe know we have a very good chance to score some good points here, Verstappen said. Its difficult for me to say now that we will be the No. 1 team this weekend, because we havent had a chance to race here yet.For Ferrari, this race represents the best victory chance of the season. Fail to win here, and the Italian team will be staring at the very real prospect of another winless season to match 2014.Im full of optimism, it should be a good place for us, said Vettel, who has been the most successful driver in Singapore, winning half of the previous eight editions. This track was very good for us last year and we have improved the car since then, so it could be a reasonable track for us again.Mercedes had an off year last year but you cant guarantee that will happen again.Mercedes has closely investigated what went wrong here, and it would be a surprise if it was as far off the pace in 2016 as it was in 2015.Last year we were blown away by the fact that we somehow got it wrong, Hamilton said to the local press. But a lot of work went into understanding that.I definitely think were not going to have as many problems as we had last year. But if we do, weve got the tools to correct it.Hamiltons lead over Rosberg in the drivers championship has been cut to two points after back-to-back victories by the German at the Belgian and Italian races. Rosberg has never won in Singapore, and his best race performance dates back to 2008 when he finished second for Williams. ' ' '