QPR Under-21s continued their impressive start to the Professional Development League 2 South season with a 2-1 victory over Millwall.In front of watching R’s boss Harry Redknapp, Rangers fielded first-teamers Eduardo Vargas and Yun Suk-Young in their starting XI – the former opening the scoring with little more than a minute played following a neat finish.Michael Doughty added a second goal with a penalty shortly after half-time, before Millwall scored what proved to be a consolation – again from the spot – through Alfie Pavey on 52 minutes.Steve Gallen’s side were ahead after only 70 seconds thanks to Vargas – who went off at half-time following a collision of heads just before the interval.Doughty capitalised on a loose pass before sliding the Chilean forward through on goal, who coolly slotted home inside the box.Six minutes later, the duo combined again – Vargas this time shooting into the side-netting after good work down the left from team-mate Doughty.This was a physical contest in which Rangers were already largely dictating.Soon, a lovely move involving Bruno Andrade, Suk-Young and Vargas saw the latter force a fine low stop from Millwall custodian Denzel Gerrar at his near post.Although the fixture continued to be hard-fought, opportunities lessened as the first half progressed.Rangers did counter attack in the 31st minute – the move once again ending with Doughty feeding Vargas, whose header was tipped wide by the Lions’ goalkeeper.The home side doubled their advantage four minutes after half-time from the penalty spot.Substitute Reece Grego-Cox was felled in the box by Jake Goodman, before Doughty stepped up to dispatch from 12 yards.The Lions replied with a penalty of their own in the 52nd minute – Pavey pulling a goal back for Millwall from the spot after Suk-Young handled a high ball into the area.Andrade almost added a third goal for the Hoops in the 58th minute, driving into the box before dragging an effort just past the foot of the left-hand post.Visitors Millwall – now in search of an equalising goal – enjoyed more possession as the closing period went on.However, it was Rangers on the attack in the 67th minute, Doughty firing low at Gerrar from 25-yards out.A chance arrived at either end in the 74th minute.First, R’s goalkeeper Aaron Lennox did well to palm a rasping free-kick away from goal, before Andrade shot wide after breaking on the counter attack.Millwall went in search of a leveller as the clock ticked down. Meanwhile, Brandon Comley went close to adding a third QPR strike, his lung-busting run ending with a shot that crept inches wide of the post.That miss didn’t matter, as the young Hoops held on to record a third league win of the campaign.Lennox, Furlong, Suk-Young, Comley, Donaldson, Kpekawa, Gibbons (Mitchell 70), Sutherland, Andrade, Doughty, Vargas (Grego-Cox 46).Sendles-White, Wise, Laurent.QPR – Vargas (2), Doughty (pen 49); Millwall – Pavey (pen 52)