没有顶行的边框矩阵

Question

是否可以从中删除顶行\bordermatrix？我只需要在矩阵的左侧放置索引，但即使我不输入任何值，我的文档也会在矩阵上方创建一个空白行：

\documentclass{article}
\usepackage{amsmath,amssymb}

\begin{document}
Some text goes here. Even more text goes here.
$$\Phi = \bordermatrix{&&&&&&&\cr A & 90&85&78&73&73&70&69 \cr B &95&851&77&73&73&68&66}.$$
Some text goes here. Even more text goes here.
\end{document}