Pakistan, June 20 -- Argentina returned to training with Lionel Scaloni facing fresh selection dilemmas, after the holders opened their World Cup campaign with a 3-0 win over ?Algeria, as competition for the striker role again pits Lautaro Martinez against ?Julian Alvarez.

The starters were back on the training pitch ahead of the second match against Austria on Monday, after only working in the gym on Wednesday, with Martinez having led the line in the ?opener before Alvarez replaced him in the 55th minute.

Alvarez was the regular starter ?heading into the tournament, but Scaloni opted for Martinez - echoing their triumphant Qatar 2022 campaign, when the Inter Milan player began as first-choice striker but Alvarez ?took over from the th...