This month, in a high-calibre field, Walsh threw 21.23m to finish third in the Diamond League event at Hampden Park. It was his longest outdoor throw, 3cm off his indoor best in Sopot.
For comparison, double Olympic champion Tomasz Majewski was fifth.
"I'm feeling pretty comfortable the way training has been going and I'm pretty confident as well," he said.
Hampden Park is "an awesome facility" and Walsh hopes that experience might give him a small edge in what's shaping as a top contest.
"I'd say 21m-plus would throw you in the mix for sure.
"But then again it can rain in Glasgow, so that could possibly bring it down a bit. But that would give you a decent chance of a medal."
Canadian heavy hitter Dylan Armstrong is injured, but two others, Jamaican O'Dayne Richards, is 16th, and Canadian Tim Nedow 19th. Walsh is expecting a decent tussle.
Walsh admits he was a bit twitchy a few weeks ago, but his technique is coming together nicely and he's pleasantly surprised at his lead-up work for Glasgow.
He quipped that the problem was possibly not working. He's a builder and hasn't been on a site since late May.
Walsh has no plans to change his way of life, which includes plenty of time away from the sport with hammer in hand.
"Working is a bonus and it takes my mind off it. It's good for me, keeps me level-headed and the boys definitely know how to pop my head if I'm getting too big for my boots.
"For example, I missed out on the world champs last year by 1cm and everything [at work] was 'oh Tommy that's 1cm too long'.
"It's good for me so I will keep doing that as long as I can."
Talking of the opposition inevitably raises the Jacko Gill question. The North Shore 19-year-old is rarely seen and only his closest confidantes really know how he's tracking.
"You never know what he's going to do," Walsh said. The pair get on fine but they're not tight, which is no surprise given their geographic differences for a start.
Plus Walsh is out and about in competition; Gill very selective.
"No I haven't, mate," Walsh replied when asked if he'd seen Gill recently. "It's not that we purposely miss each other, but we just seem to. I'm sure he's going good.
"He's definitely taken a slightly different path to me, but we've both ended up here and hopefully can throw well."
Cricket and rugby were ahead of the shot for Gill when he was at school.
"I never thought I'd be a shot putter, that's for sure. But the world works in funny ways."
Walsh is on track to get the last laugh, too.
