Murrayfield Wanderers' BT Cellnet Cup giant-killing run came to a predictable end when they were hammered 50-20 in the quarter-finals by Premiership champions Heriot's at Goldenacre.

Heriot's made a whirlwind start, taking just 22 seconds to open the scoring with a superb try by wing Charlie Keenan. And when former Scotland tourist Hugh Gilmour crashed over again in the sixth minute, the contest was all but over.

Heriot's coach Gareth Davies said: ``We had been apprehensive before the kick-off, but we couldn't have dreamed of a better opening sequence.''

Wands chief Peter Wright added: ``They were exceptional in the first half and played at a pace we just couldn't live with.

``The great thing was that we stuck in and refused to buckle completely. It would have been easy to cave in and lose by 70 points, but we kept plugging away."

Keenan and Gilmour each went on to notch try doubles, while the other Heriot's tries were claimed by David Short, Andy Dall, Marc Teague and Tam McVie. Stand-off David Adamson slotted five conversions to bring up the half-century of points.

Wright's men earned tries through Keith Morrison, Christian Bruce and Gareth Hann, with Carl McWilliam kicking the rest of their points.

Meanwhile, Boroughmuir coach Iain Paxton is leading the call for the top-flight of the Premiership to be expanded from 10 teams to 14.

He spoke out after watching his jittery holders edge into the Cup semi-finals by pipping Division Two front-runners Aberdeen GSFP 22-20 at Rubislaw.

Former Scotland back-rower Paxton reckons there is little of any difference in standard between the teams in the lower half of Division One and the upper half of Division Two.

And he is convinced that the domestic game would be boosted by a revamp.

Paxton said: ``The whole idea is to get the best sides and players competing against each other as often as possible.

``Apart, perhaps from Watsonians who are going through a rough patch, there is nothing to choose between the leagues and to my mind the sooner we can raise the general standard, the better.''

Boroughmuir had to rely on an interception breakaway try by Malky Clapperton to book their place in the last four.

And the ambitious Dons were left kicking themselves for failing to convert a long spell of second-half pressure into decisive points.

Disappointed Aberdeen coach John Fleming admitted: ``We had our chances and failed to take them.''

Former Scotland wing Derek Stark and scrum-half Calum Cusiter bagged Muir's other touchdowns, while Calvin Howarth banged over three crucial kicks.

Steve Newton and Keith Oddie went over for Grammar, with Oddie adding both conversions and two penalties.