Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Sergey Gavryushin
Table title:
International competitions
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1982 </td><td class="highlighted"  colspan=1 rowspan=1 > European Championships </td><td colspan=1 rowspan=1 > Athens, Greece </td><td class="highlighted"  colspan=1 rowspan=1 > 8th </td><td class="highlighted"  colspan=1 rowspan=1 > 20.15 m </td></tr>
<tr> <td colspan=1 rowspan=1 > 1986 </td><td colspan=1 rowspan=1 > Goodwill Games </td><td colspan=1 rowspan=1 > Moscow, Soviet Union </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 21.09 m </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1987 </td><td class="highlighted"  colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Rome, Italy </td><td class="highlighted"  colspan=1 rowspan=1 > 8th </td><td class="highlighted"  colspan=1 rowspan=1 > 20.15 m </td></tr>
</table>
Question:
How did Sergey Gavryushin perform at the 1982 European Championships and the 1987 World Championships?
Answer:
Sergey Gavryushin had identical results at the 1982 European Championships and 1987 World Championships, coming eighth with 20.15 m.