Rob Howley calls up six Lions for Wales Test against Japan

• Interim coach makes 10 changes from side who defeated Argentina• Jamie Roberts and Jonathan Davies resume midfield partnershipWales have in the past used their November encounter with a second-tier nation to give their reserves a run, but a series of unimpressive performances and a couple of unexpected results mean six 2013 Test Lions will take the field against Japan in Cardiff on Saturday.The Wales interim head coach, Rob Howley, who is also aware that only a comfortable victory against Japan will consolidate his side’s place in the top six of the world rankings, has made 10 changes from t…