Hererra, who will wear No. 2 with the Mets, is being promoted Friday after Daniel Murphy was put on the disabled list with a calf strain.
According to Terry Collins, Herrera is expected to be the team's every-day second baseman until Murphy returns from the DL.
Herrera talked to reporters after arriving to the ballpark and said he is not a power hitter, but a consistent, line-drive hitter; he knows most of his Latin teammates; he has no idea what he was given No. 2; and he's proud to be the first player from Colombia to be on the Mets.
Herrera hits to all fields using a line-drive stroke and a solid two-strike approach, a scout watching him recently told reporter Adam Rubin (ESPN, Aug. 29)...
"He may be a little anxious at the beginning, but I think the kid will do fine," the scout told Rubin.
Similarly, ESPN.com’s Keith Law recently said in an online chat (ESPN, Aug. 22) that Hererra is capable of becoming an above-average, every-day, big-league second baseman, “and maybe more."
“If he ended up on a few All-Star teams, I wouldn’t be shocked,” Law added.
Hererra was ranked by MLB.com as the organization's sixth-best position prospect earlier this summer.
"Hererra already has shown he has a good understanding of what to do at the plate," MLB.com's Jonathan Mayo said in his report. "He is at his best when he's hitting line drives to all fields. He has a solid arm and shows good infield actions. He is still improving as a second baseman, but he looks like he'll be an everyday big leaguer in time."
Double-A manager Pedro Lopez added that Herrera brings a lot of energy to his team (Press & Sun-Bulletin).
"He's a player that moves this team," said Lopez. "I think everybody feeds from that."
Hererra needed to be added to the 40-man roster before December to avoid being selected by another team in this winter's Rule 5 draft (ESPN, Aug. 29).