the dataframe is looking like

let's say this df1

```
teamname  player.1  player.2  player.3
xyz        abc        nan       def
gh1        nan        hgf       jnr
oed        jeo        nan       nan

```

output should be like

let's say this df2

```
teamname player
xyz       abc
          def
gh1       hgf
          jnr
oed       jeo

```