Jonathan Rea cemented his place at the top of the standings with a double victory in Sunday's seventh round of the World Superbike Championship at Portimao, Portugal.

The Northern Ireland Kawasaki rider recovered from starting off the third row of the grid to take the opening race ahead of team-mate Tom Sykes.

Rea then made it ten victories of the 2015 campaign when he took the chequered flag again, this time ahead of Aruba's Davide Giugliano.

Isle of Man-based Rea moved on to 330 points, some 124 ahead of Sykes, who had won both races last time out at Donnington, with Leon Haslam of Aprilia third, still just in front of Welshman Chaz Davies.

Rea had to begin race one from eighth place on the grid following a crash in qualifying, but produced a blistering start and went on to secure a winning margin of 9.384 seconds ahead of Sykes and Davies of Aruba.

Showers fell with six lefts lap and the bikes started to come in for a change to wet tyres, with Sykes pitting later as he continued to battle it out against Rea at the front.

However, Sykes - who had started second behind Italian rider Giugliano on pole - then suffered a mechanical problem as he headed into the final lap, which Rea took full advantage of to power ahead and record a ninth victory.

With the weather then remaining dry, Rea was able to go on to take his season victory tally into double figures, finishing 5.416secs ahead of Giugliano.

Sykes had also been in the leading trio but was again troubled by technical issues with his ZX10R, which saw him fall back to eventually finish eighth.

The next round of the championship takes place at Misano, Italy on 21 June.