Soccer-Leicester in serious trouble after Swansea defeat

* Champions Leicester lost 2-0 at Swansea to worsen their relegation worries

* Foxes only one point above the bottom three places

* Defender Alfie Mawson put the home side ahead with a fine volley

* Left back Martin Olsson added his first goal for the club

* Swansea visit leaders Chelsea next; Leicester are at home to Liverpool

SWANSEA CITY 2 LEICESTER CITY 0

Feb 12 ( Reuters) - Last season's Premier League champions Leicester City were left in serious trouble on Sunday after defeat by improving relegation rivals Swansea City, who moved three points above them.

Leicester remained only one point above the bottom three places, having not won in 15 away games in the league since last April or scored in six league games this calendar year.

They fell behind to a fine volley by defender Alfie Mawson in the 37th minute.

Swedish full back Martin Olsson then scored his first goal for the Welsh club just before halftime.

(Reporting by Steve Tongue, editing by Neil Robinson)