The Lions were in action against the New Zealand Provincial Barbarians this morning - three weeks before the opening test against the Kiwis.
A lot of fans were nevertheless angry with his pronunciation of Greig Laidlaw's name.
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One annoyed Twitter user wrote: "Another six weeks of Stuart Barnes being unbelievably awful is going to test my patience to breaking point… #LionsNZ2017"
Need to replace Stuart Barnes at the break. Also bring on Greig Laidlaw for Gregor Laidlaw
Another said: "Amongst those have a shocker: Stuart Barnes..."
One joked: "Need to replace Stuart Barnes at the break. Also bring on Greig Laidlaw for Gregor Laidlaw. #LionsNZ2017"
While a fellow rugby fan added: "Why does Stuart Barnes insist on calling Greig Laidlaw "Gregor" it's not his name and it's disrespectful!!! #LionsNZ2017"
One took it into upon himself to tweet Sky Sports directly and said: "can someone tell Stuart Barnes that it's Greig Laidlaw, NOT Gregor!!! #LionsNZ2017
