Millwall manager Neil Harris admits he will be "nervous" watching this weekend's World Cup Qualifiers involving his players, but also praised his sextuplet for their call-ups.
George Saville, Kris Twardek and Aiden O'Brien have joined up with Northern Ireland, Canada and the Republic of Ireland respectively for the first time, whilst Conor McLaughlin, Shane Ferguson and Jordan Archer will re-join the Green and White Army and Scotland for the final set of qualifiers.
"I think it's not just testimony to the players, but also to myself and my staff that we've had six players called up for international duty," Harris said.
"That's based on good team performances, but also all six of them playing well individually. They all deserve it.
"Like all managers, I'll be nervous about them getting injured on international duty, but when they come back, they come back on cloud nine. I'm really looking forward to them getting the opportunity to play."
The Lions' boss reserved special adulation for Saville, who is eligible to play for Northern Ireland through his grandmother.
"I don't want to single out too many individuals, but George has shown some fine form and outstanding ability since arriving back at the club in the summer.
"He was a bit surprised to get the call! As soon as he found out, though, he was buzzing. It's given him a spring in his step and he's been bouncing around, having a laugh with Conor [McLaughlin] and Fergie [Shane Ferguson].
"He's proud, as is Aiden with his first call-up. Kris Twardek also. What an opportunity for these guys, along with Jordan once more."
Northern Ireland take on Germany on Thursday night and Norway on Sunday, whilst Scotland are in action at the same time against Slovenia and Slovakia.
The Republic of Ireland face Moldova and Wales on Friday and Monday.
Canada, meanwhile, lock horns with El Salvador in a friendly match in Houston, Texas.