By Philip O'Connor

LILLE, France (Reuters) - Slovakia deepened Russia's woes with classy first-half goals from Vladimir Weiss and the outstanding Marek Hamsik securing a tense 2-1 victory in their Euro 2016 Group B clash on Wednesday.

For the second game in a row, the Russians managed only two attempts on target and their wasteful finishing cost them dearly, with substitute Denis Glushakov's 80th minute goal proving too little too late for them.

Their profligacy leaves Russia needing to beat Wales in their final group game if they are to have any chance of progressing but there was only joy for Slovakia, as they marked their debut at a European Championship finals with a first win.

Just 24 hours after UEFA told Russia it would be expelled from the tournament if their fans caused more crowd trouble, the Slovaks outplayed them for large parts of a match contested under a closed roof because of forecasts of heavy rain.

Man of the match Hamsik gave an early taste of what was to come when he fired a thundering shot just over in the 10th minute but the Russians had plenty of chances of their own in the first half-hour which they failed to convert.

Winger Fedor Smolov was particularly wasteful, often deciding to shoot when passing would have been a better option, and firing chance after chance wide

Slovakia, who made three changes from the side that lost their opening game 2-1 to Wales, took the lead in the 32nd minute when Hamsik hit a superb long ball to Weiss, who cut in from the left edge of the box past two defenders and curled his shot inside the far post.

Just before halftime Hamsik got on the scoresheet himself, picking up a short corner from Weiss on the left and striking his own superb curling shot across the goal and in off the right hand post.

"It was a collective effort, we fought for it," Hamsik said after the final whistle. "It is the first Euro win for Slovakia in history. We are happy we were able to get it."

With the Russian attack in disarray, the Slovaks appeared to be heading towards a comfortable victory for much of the second half, but the game changed direction dramatically in the last 10 minutes.

Glushakov threw his side a lifeline in the last 10 minutes when he reduced the deficit, heading home Oleg Shatov's cross. Suddenly, Slovakia were on the back foot and the Russians looked capable of grabbing an equalizer.

Jan Durica in the center of the Slovakian defense continued to throw himself about, chasing, harrying and covering shots in a desperate effort to protect his side's slender lead.

Glushakov had a chance to pull his side level late on but fired just wide, and an injury-time corner for Russia was headed clear as the final whistle went.

Despite the disappointing result for the Russians, there was no repeat of the scenes that followed Saturday's draw with England when their fans charged at opposition supporters after the final whistle in Marseille.

Instead, the Russian fans left the stadium quickly while the jubilant Slovaks danced in front of their ecstatic supporters.

The result leaves Russia with just a single point from a draw with England, and coach Leonid Slutski has not yet given up hope of making the knockout stages.

"The situation is pretty unclear. Everyone is still in with a chance," Slutski told reporters.

Slovakia top the group on three points ahead of Wales on goal difference. The Welsh take on England in Lens on Thursday.

(Reporting by Philip O'Connor, additional reporting by Alastair Macdonald. Editing by Adrian Warner and Ian Chadband)