All times Eastern

APRIL, VARIOUS DATES

A Long Season

PBS; check local listings for time

“You've got to start way down, at the bottom, when you're six or seven years old,” the dying Babe Ruth advised the children of America about baseball in his farewell address in Yankee Stadium in 1948. In this documentary, an engrossing chronicle of a Little League team's entire season, the kids do what the Babe said. Player Wyatt Cowen, 8, narrates, along with his dad, Fred, the team's coach. (Repeat.)

APRIL-JULY

Ancestors

PBS; check local listings for time

This 13-part series on family-history research looks at case studies to explain how to use records of all sorts, such as census and cemetery records, genealogical data, and military, probate, immigration and newspaper documents.

SUNDAY, APRIL1

Baseball Tonight

ESPN, 3 p.m.

“You can observe a lot by watching,” New York Yankees great Lawrence Peter “Yogi” Berra once pointed out. He could've been talking about this show, a full hour of each day's major league baseball scores and highlights, along with expert analysis. This installment is a special presentation, after which the show moves to its weeknight time slots of 10 p.m. and midnight.

SUNDAY, APR.IL 1

Major League Baseball: Opening Day

ESPN, 4:05 p.m.

The late baseball owner-showman Bill Veeck used to say, “That's the true harbinger of spring — the sound of a bat on a ball.” Fans should hear that unmistakable sound often on this year's Opening Day, when the American League's Texas Rangers and Toronto Blue Jays play ball in Hiram Bithorn Stadium in San Juan, Puerto Rico. Jon Miller, Hall of Famer Joe Morgan and Alvaro Martin announce.

SUNDAY, APRIL 1

The Incurable Collector

A&E, 8 p.m.

In this world-premiere special presentation, John Larroquette reports on collectors both mainstream and offbeat. This initial installment discusses collectibles such as autographs, untrained artists' “outsider art” and the Rose Bowl flea market. Later this week, on Apr. 7 and 8 respectively, the show moves to its regular time slots, Saturday at 6 p.m. and Sunday at noon.

MONDAY, APRIL 2

MSNBC Investigates: The Runaways

MSNBC, 8 p.m.

Anyone who thinks that mass abortions have turned the Planned Parenthood mantra “Every child a wanted child” into reality will learn otherwise by watching this show. Host John Siegenthaler reports on a three-week stay on the streets of Portland, Ore., with runaway teenagers who become dependent on the black tar heroin sold there.

FRIDAY, APRIL 6

Egg: The Arts Show

APBS; check local listings for time

This season-opening episode, “How to Be Happy,” visits yodelers at the National Old-Time Country Festival; octogenarian Isidore Elfman, who recites love poems to his wife weekly in a café in Manhattan; bonsai master Harry Hirao in California desert country; and Jeff Koons with his botanical sculpture “Puppy” in Rockefeller Center.

Dan Engler writes from Santa Barbara, California.