History of CR 702.19a

Every distinct wording since 2010, newest first.

May 3, 2019 · War of the Spark
Trample is a static ability that modifies the rules for assigning an attacking creature’s combat damage. The ability has no effect when a creature with trample is blocking or is dealing noncombat damage. (See rule 510, “Combat Damage Step.”)
January 25, 2019 · Ravnica Allegiance
Trample is a static ability that modifies the rules for assigning an attacking creature's combat damage. The ability has no effect when a creature with trample is blocking or is dealing noncombat damage. (See rule 510, "Combat Damage Step.")
May 1, 2014 · Journey into Nyx
Trample is a static ability that modifies the rules for assigning an attacking creature’s combat damage. The ability has no effect when a creature with trample is blocking or is dealing noncombat damage. (See rule 510, “Combat Damage Step.”)
February 1, 2014 · Born of the Gods
Trample is a static ability that modifies the rules for assigning an attacking creature’s combat damage. The ability has no effect when a creature with trample is blocking or is dealing noncombat damage. (See rule 510, "Combat Damage Step.")
July 13, 2013 · Magic 2014
Trample is a static ability that modifies the rules for assigning an attacking creature's combat damage. The ability has no effect when a creature with trample is blocking or is dealing noncombat damage. (See rule 510, "Combat Damage Step.")
June 17, 2011 · Commander 2011
Vigilance is a static ability that modifies the rules for the declare attackers step.
February 1, 2010 · Worldwake
Banding is a static ability that modifies the rules for combat.