In athletics, when the women's pentathlon was replaced by the heptathlon what field event was introduced?

The heptathlon has been contested by female athletes since the early 1980s, when it replaced the pentathlon as the primary women's combined event contest (the javelin throw and 800 m were added). It was first contested at the Olympic level in the 1984 Summer Olympics. In recent years some women's decathlon competitions have been conducted, consisting of the same events as the men's competition in a slightly different order, and the IAAF has begun keeping records for it, but the heptathlon remains the championship-level combined event for women. Nafissatou Thiam, representing Belgium, is the 2016 Olympic Gold Medallist and the 2017 World Champion.

A heptathlon is a track and field combined events contest made up of seven events. The name derives from the Greek hepta (seven) and ἄθλος (áthlos, or ἄθλον, áthlon, meaning "feat"). A competitor in a heptathlon is referred to as a heptathlete.

There are two heptathlons – the women's heptathlon and the men's – composed of different events. The men's heptathlon is older and is held indoors, while the women's is held outdoors and was introduced in the 1980s, first appearing in the Olympics in 1984.

The seven events are:

100 metres hurdles

High jump

Shot put

200 metres

Long jump

Javelin throw

800 metres