Maybe it’s parity or maybe it’s just the unpredictability of playing early spring baseball in New England, but less than halfway through the regular season only 4 of the 49 Interscholastic League baseball teams came into yesterday’s action with undefeated records — and even one of those teams played a tie game.

This weekend marks the end of the first half of the regular season — not counting rescheduled postponed games. As of this morning, Portsmouth, South Kingstown and Hendricken were the three teams among the the 28 Division I teams that had not lost a game.

Central went into yesterday’s game against intercity rival Classical as the only one of the 21 Division II teams without a loss, but even the Knights battled to a 6-6 tie with Ponaganset in a game three weeks ago that was suspended because of darkness and has yet to be completed.

It all should make for aninteresting final month of the season that begins Monday.

Perfection on the line

If Hendricken and South Kingstown finish this week unbeaten, (Hendricken meets East Greenwich and South Kingstown is host to Warwick Vets today) and also win games Tuesday, the Hawks and Rebels will put their undefeated records on the line when they meet next Thursday at South Kingstown.

Portsmouth and South Kingstown do not play until the final day of the regular season on May 17. Hendricken and Portsmouth do not meet in a regular-season game this year.

Two-sport star

Apparently, Hendricken’s Andrew Ferreira can throw a baseball as well as he throws a football.

Ferreira, the Hawks’ senior All-State football quarterback whose passing played a major role in Hendricken reaching the Division I Super Bowl last fall, pitched a no-hitter against Toll Gate on Monday. Ferreira struck out 11 en route to 7-0 victory.

Geary shines on mound

Thursday’s game with South Kingstown is the first of two big tests for Hendricken next week. After they meet the Rebels on Thursday, the Hawks will host North Kingstown on Saturday afternoon.

It’s a good bet Hendricken will see South Kingstown ace Jackson Geary. So far this season, Geary, the senior right-hander who posted a 12-1 record last season, has led South Kingstown to a 7-0 record going into the Rebels’ game with Warwick this afternoon.

Cougars’ closer slams door

North Providence’s Jay Connors is becoming the Jonathan Papelbon — or is it the Mariano Rivera — of Rhode Island high school baseball.

Regardless of which major-league team North Providence coach Dean Garganese roots for, it’s a good bet Connors has become Garganese’s favorite closer after the Cougars’ senior posted his third save of the season in a 7-5 victory over Woonsocket on Monday.

Long road to victory

It doesn’t quite match the 33-inning game that the Pawtucket Red Sox played over a 65-day period back in 1981, but the 13-inning Mount St. Charles-Juanita Sanchez contest that took eight days definitely was a unique Rhode Island high school event.

Mount St. Charles posted a 6-5 victory Monday when Vaughn Haywood singled home John Guay with the winning run in the bottom of the 13th. The game had been suspended seven days earlier because of darkness with the score 4-4 after 12 innings.

Two days after he drove home the winning run against Sanchez, Haywood pitched six innings of shutout ball in a 10-0 victory over Ponaganset.

The two victories kept Mount St. Charles tied with Scituate atop the Division II-North standings with a 5-1 record going into the Mounties’ game with Johnston yesterday.

jgillool@projo.com