Danny Ward has lost his Leicester City place but Robert Page says he has just played his best two games for Wales.
It was the Leicester's goalkeeper's first shutout since the Foxes' EFL Cup win over MK Dons in December.
Ward made some crucial saves as Wales held on to beat the Latvians, having also played a significant role in last Saturday's 1-1 draw in Croatia.
It has been a fine start to European Championship qualifying for a Wales side in transition following the retirements of key figures in Gareth Bale and Joe Allen, with the cause not helped by injuries to Wayne Hennessey, Ben Davies and Brennan Johnson.