Cristiano Ronaldo is 41, but Portugal coach Roberto Martinez said age is only a number and that his captain is judged on current form and by the same standards as everyone else. Ronaldo could play in a sixth World Cup, with this year’s tournament in North America set to begin in less than a month, a staggering possibility even for a player who has twisted football’s record books into new shapes. Recommended Stories list of 4 items list 1 of 4 David Beckham becomes first British billionaire sportsman list 2 of 4 Israeli minister blasts Barcelona’s Lamine Yamal for Palestinian flag wave list 3 of 4 Saudi investment fund seals FIFA deal as official World Cup 2026 supporter list 4 of 4 Serie A finish in chaos, worsened by clash with Italian Open tennis final end of list Yet Martinez, speaking to the Reuters news agency in Lisbon on Thursday, insisted Portugal were not carrying a monument to past glory.…