The streaking Mets, now tied with Florida for first in the NL East, are in search of their seventh win in a row and third consecutive series sweep today when Livan Hernandez takes on the Pirates at Citi Field. Hernandez is coming off his best start as a Met last Tuesday in Atlanta, throwing 6 1/3 innings of one-run ball in an eventual 4-3 win over the Braves.

Hernandez is 3-4 with a 5.32 ERA in 12 career starts against Pittsburgh and hasn’t beaten them since June 20, 2005, as a member of the Nationals.

Hernandez will square off against Pirates right-hander Ian Snell, who is 0-1 with a 6.55 in five career appearances (four starts) against the Mets.

Here is the 16-13 Mets’ order for the 1:10 p.m. game:

Jose Reyes SS

Luis Castillo 2B

Carlos Beltran CF

Carlos Delgado 1B

David Wright 3B

Daniel Murphy LF

Omir Santos C

Ryan Church RF

Livan Hernandez RHP (2-1, 5.53)

Hernandez’s numbers against the Pirates’ hitters

The 12-18 Pirates will counter with:

Nyjer Morgan LF

Delwyn Young 2B

Nate McLouth CF

Adam LaRoche 1B

Eric Hinske RF

Andy LaRoche 3B

Robinzon Diaz C

Brian Bixler SS

Ian Snell RHP (1-4, 4.50)

Snell’s numbers against the Mets’ hitters