Pollard bowled a big no-ball when Lewis was on 97 off 32 balls, with St Kitts and Nevis Patriots needing one run to beat Barbados Tridents in the Twenty20 competition.
The no-ball gave 25-year-old Lewis' side the win but saw him miss out on the chance of a ton after he and captain Chris Gayle reached 129-0.
Cricket statistician and journalist Mazher Arshad said: "So Kieron Pollard bowls a no-ball to deny Evin Lewis a hundred in CPL. Suraj Randiv was suspended for a match when he did that to [Virender] Sehwag in 2010."
Cricket supporter Mainraj Paudel called Pollard's actions a "shameless act" on Twitter, while another spectator, Abhishek Chaturvedi, accused Pollard of showing "zero sportsmanship".
Lewis, however, was more diplomatic.
In a televised post-match interview, he said: "It hurts [missing out on the hundred], but hitting 97 not out off 33 balls? I'll take that any day.
"I've been hitting the ball long and hard in the nets. I'm confident now and looking forward to the play-offs."
If Lewis had completed his century in 33 balls, it would have been the second fastest of all time - just behind Chris Gayle's 30-ball IPL knock in 2013.

Time Warner, which owns HBO and CNN, will also advertise on the service.
The deal comes as television companies look to capture growing digital audiences and rival tech platforms, such as Facebook, add video content.
It boosted shares of both companies, sending Snapchat's stock up almost 2%.
Snapchat started in 2011 as a picture-messaging app and now has more than 150 million daily users.
It became a publicly traded company earlier this year.
The firm has worked with companies, including the BBC, as it broadens the content available.
Its shows typically last for three to five minutes.
Currently one show airs on Snapchat each day. That number is expected to increase to three by the end of the year, according to the company.
Time Warner's contributions will include comedy and scripted drama.
The firm has produced many hit films and TV shows including Wonder Woman and Game of Thrones.
The two-year partnership is valued at about $100m, according to Reuters.

The developments at 1 Undershaft and 22 Bishopsgate were approved by the City of London Corporation earlier this year.
Mr Khan said both would include a free public observation platform.
The 73-storey tower at 1 Undershaft, known as the Trelis, will be 305 metres (1,000ft) high - just five metres shorter than the tip of the Shard.
The Bishopsgate development comes ten years after the ill-fated Pinnacle was granted planning position.
That development was eventually abandoned, leaving a half-finished nine-storey shaft pointing towards the sky after funding dried up four years ago.
City Hall said the new developments would deliver nearly Â£6m in contributions to affordable housing, which the Corporation of London will use to deliver affordable homes on its wider estates across the city.
It will also provide more than Â£14m towards the construction of the Crossrail project.
It said the plans include a significant expansion of public open space on the sites, as well as office accommodation for almost 20,000 workers.
Mr Khan, said: "These two projects represent a significant investment in the heart of London's economy and are a clear sign that the capital is open for business.
"They will be highly-visible signs of London's enduring appeal as a place to invest.
"These new landmark buildings will offer world-class offices and it's great news that the development of the site at 22 Bishopsgate can now proceed, as this has lain unused for almost five years.
"What's more, Londoners and visitors alike should have the opportunity to take in the views from the upper reaches of these new buildings, for free, and I'm really pleased we have been able to secure this as part of the plans."
Kieron Pollard has been criticised on social media after bowling a no-ball which denied opposition batsman Evin Lewis the chance of a century in a Caribbean Premier League match.
[NEXT_CONCEPT]
Media giant Time Warner will produce shows for audiences on the social media platform Snapchat as part of a new partnership that the two companies announced on Monday.
[NEXT_CONCEPT]
London mayor Sadiq Khan has approved the building of two new skyscrapers for the capital.