Duel to stay in touch

Arsenal striker Danny Welbeck's reunion with former club Manchester United supplies one of the sub-plots as the Premier League resumes this weekend following the international break.
Arsenal welcome United to the Emirates Stadium on Saturday evening for a match that will see both teams attempt to avoid conceding further ground to early-season pace-setters Chelsea.
Beaten 2-1 at Swansea City on their last outing, Arsenal approach the weekend in sixth place, 12 points behind leaders Chelsea and a point above United, who edged Crystal Palace 1-0 in their most recent encounter.
Welbeck has excelled at centre-forward for both Arsenal and England since leaving United on transfer deadline day in a £16 million ($25.1 million, 20 million euros) transfer.
The Manchester-born striker, 23, came through the youth ranks at Old Trafford and his departure prompted former assistant coach Mike Phelan to declare that United's identity had been "broken".
Welbeck was withdrawn as a precaution during England's 3-1 friendly win over Scotland in Glasgow on Tuesday after complaining of tightness in his hamstring, but he is expected to face United.
Arsenal manager Arsene Wenger has also been boosted by the news that France striker Olivier Giroud is ready to return to action after making a speedy recovery from a broken leg.
United received a blow during the international break when Dutch midfielder Daley Blind sustained a knee ligament injury likely to sideline him for several weeks.