The phrase "a couple of commentators" is correct and usable in written English.
It can be used when referring to two or a few individuals who provide commentary or analysis, often in the context of sports, politics, or media.
Example: "During the debate, a couple of commentators offered differing perspectives on the candidates' policies."
Alternatives: "a few commentators" or "several commentators".
Christmas seems to come around earlier every year, a couple of commentators point out.
A couple of commentators in India wished that the program was also being shown here, and India Ink agrees.
A couple of commentators try desperately to make these clips more important and entertaining than they are, including the comic Floyd Vivino of "The Uncle Floyd Show".
Gfinity had put on a more modest League of Legends contest than the one taking place in Seoul, with amateur teams and a couple of commentators trying to whip up some excitement amongst the small crowd of onlookers.
And while we're about it, a couple of other commentators' pronunciations get more irritating with each repetition.
And so, when MS Dhoni recalled Ian Bell to the crease last Sunday, the phrase "not cricket" was dragged out and dusted down by a couple of the commentators on Test Match Special.
Although a couple of legal commentators like Brookings Fellow Stuart Taylor Jr. picked up on and discussed the issue, the Bush Administration, unbeknown to anyone at the time, had already begun by June 2002 to go over to the "dark side," ordering the CIA to start "harsh interrogation tactics" and to use extralegal torture at "black sites".
For a few hours, perhaps even a couple of days, afterwards, commentators discuss What It All Means.
But when a couple of BBC sports commentators got a bit carried away over Jenny Jones's Team GB bronze in Sochi this week ("Go on, the Jones!" raved one) they unleashed swivel-eyed readers to denounce "immature idiots".
(Just a couple of weeks ago, reasonable commentators thought it was plausible that, together, Bank of America and Citigroup might need "a few hundred billion" in capital between them).
