Strength in depth key to Wales' success, says Gatland
Wales coach Warren Gatland says his team's strength in depth is the key to their record unbeaten run.
His side's quality in reserve was showcased during a 21-13 victory over England in the Six Nations last month when fly-half Dan Biggar made an influential second-half appearance.
On as a replacement, he set up Josh Adams' match-clinching try as Wales took a step closer to the Six Nations title.
Biggar and Gareth Anscombe, Wales' current starting number 10, could play a pivotal role in Saturday's clash with Scotland at Murrayfield as Gatland revels in the variety of his options.
"I think both the 10s have been good coming off the bench," Gatland said.
"It's something that we did identify going back to the autumn, just in terms of the strength in depth we are trying to create in this squad and how important our bench has been.
"Our bench has been fantastic for us, so when we select the side we do talk about the potential impact of players coming off the bench. Not just carrying on, but giving us an impact off the bench.
"In fairness, they've been excellent, not just in the last game, but in a number of games for us.
"It has been a definite consideration when we've been picking the side."
The England win has left Wales, unbeaten for 12 Tests, requiring victories against Scotland and then Ireland in Cardiff seven days later to secure the Six Nations title and a third Grand Slam of Gatland's reign.
"There is no doubt it was an important result for us. We prepared exceptionally well in those two weeks leading up to England," Gatland said.
"Our territory and possession against England was a pretty impressive statistic, and for us to finish as strong as we did in the last 20 minutes when they struggled to get out of their half, was excellent.
"We finished strongly, and we can build on that for this week."
© 2019 AFP